diff --git a/ENI2/Controls/POListControl.xaml b/ENI2/Controls/MaerskListControl.xaml
similarity index 97%
rename from ENI2/Controls/POListControl.xaml
rename to ENI2/Controls/MaerskListControl.xaml
index cafbeb49..e00d047a 100644
--- a/ENI2/Controls/POListControl.xaml
+++ b/ENI2/Controls/MaerskListControl.xaml
@@ -1,56 +1,56 @@
-<UserControl x:Class="ENI2.Controls.POListControl"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:util="clr-namespace:ENI2.Util"
-             xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
-             xmlns:col="clr-namespace:System.Collections;assembly=mscorlib"
-             xmlns:p="clr-namespace:ENI2.Properties"
-             xmlns:local="clr-namespace:ENI2.Controls"
-             mc:Ignorable="d" 
-             d:DesignHeight="450" d:DesignWidth="800">
-    <UserControl.Resources>
-        <col:ArrayList x:Key="arrList">
-            <col:DictionaryEntry Key="None" Value="0" />
-            <col:DictionaryEntry Key="Maersk BRV/WHV" Value="1" />
-            <col:DictionaryEntry Key="SeaGo BHV" Value="2" />
-            <col:DictionaryEntry Key="SeaGo WHV" Value="4" />
-        </col:ArrayList>
-    </UserControl.Resources>
-    <GroupBox Name="groupBoxRP" Header="{x:Static p:Resources.textPOLists}">
-        <Grid>
-            <Grid.RowDefinitions>
-                <RowDefinition Height="28" />
-                <RowDefinition Height="*" />
-            </Grid.RowDefinitions>
-            <StackPanel Orientation="Horizontal">
-                <Label Content="Calendar week" />
-                <xctk:DoubleUpDown x:Name="doubleUpDownCalendarWeek" VerticalContentAlignment="Center" VerticalAlignment="Center"
-                                   HorizontalAlignment="Stretch" Margin="2" Value="01" ValueChanged="doubleUpDownCalendarWeek_ValueChanged"/>
-                <Label Content="Type" />
-                <ComboBox x:Name="comboBoxFilterType" Margin="2" SelectionChanged="comboBoxFilterType_SelectionChanged" Width="100" />
-                
-                <Button x:Name="buttonExcelExport" Margin="2" Click="buttonExcelExport_Click" Content="Export Excel" Width="100" />
-                <Button x:Name="buttonSaveChanges" Margin="2" Click="buttonSaveChanges_Click" Content="Save changes" Width="100" IsEnabled="False" />
-            </StackPanel>
-            <local:ENIDataGrid Grid.Row="1" Margin="2,8,2,2" x:Name="dataGridPOCores" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" 
-                                             SelectionMode="Single" AutoGenerateColumns="False" CellEditEnding="dataGridPOCores_CellEditEnding" CanUserAddRows="False">
-                <DataGrid.Columns>
-                    <DataGridTextColumn Header="IMO/ENI" Binding="{Binding IMOENIDisplay}" IsReadOnly="True" />
-                    <DataGridTextColumn x:Name="gridColumnPONumber" Header="PO number" Binding="{Binding PONumber, Mode=TwoWay}" IsReadOnly="False" />
-                    <DataGridComboBoxColumn x:Name="gridColumnGroup" Header="Group" IsReadOnly="False" SelectedValueBinding="{Binding Flags, Mode=TwoWay}"
-                                            ItemsSource="{StaticResource arrList}" DisplayMemberPath="Key" SelectedValuePath="Value">
-                    </DataGridComboBoxColumn>
-                    <DataGridTextColumn Header="Ship name" Binding="{Binding Shipname}" IsReadOnly="True" />
-                    <DataGridTextColumn Header="ETA" Binding="{Binding ETA_NOA_NOD, StringFormat=\{0:dd.MM.yyyy HH:mm\}, Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="True" />
-                    <DataGridTextColumn Header="ETD" Binding="{Binding ETD_NOA_NOD, StringFormat=\{0:dd.MM.yyyy HH:mm\},  Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="True" />
-                    <DataGridTextColumn x:Name="gridColumnATA" Header="ATA" Binding="{Binding POATA, StringFormat=\{0:dd.MM.yyyy\}, Mode=TwoWay, Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="False" />
-                    <DataGridTextColumn Header="ATD" Binding="{Binding ATD, StringFormat=\{0:dd.MM.yyyy HH:mm\}, Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="True" />
-                    <DataGridTextColumn Header="Hafen" Binding="{Binding PortnameDisplay}" IsReadOnly="True" />
-                    <DataGridTextColumn Header="Id" Binding="{Binding DisplayId}" IsReadOnly="True" />
-                </DataGrid.Columns>
-            </local:ENIDataGrid>
-        </Grid>
-    </GroupBox>
-</UserControl>
+<UserControl x:Class="ENI2.Controls.MaerskListControl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:util="clr-namespace:ENI2.Util"
+             xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
+             xmlns:col="clr-namespace:System.Collections;assembly=mscorlib"
+             xmlns:p="clr-namespace:ENI2.Properties"
+             xmlns:local="clr-namespace:ENI2.Controls"
+             mc:Ignorable="d" 
+             d:DesignHeight="450" d:DesignWidth="800">
+    <UserControl.Resources>
+        <col:ArrayList x:Key="arrList">
+            <col:DictionaryEntry Key="None" Value="0" />
+            <col:DictionaryEntry Key="Maersk BRV/WHV" Value="1" />
+            <col:DictionaryEntry Key="SeaGo BHV" Value="2" />
+            <col:DictionaryEntry Key="SeaGo WHV" Value="4" />
+        </col:ArrayList>
+    </UserControl.Resources>
+    <GroupBox Name="groupBoxRP" Header="{x:Static p:Resources.textPOLists}">
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="28" />
+                <RowDefinition Height="*" />
+            </Grid.RowDefinitions>
+            <StackPanel Orientation="Horizontal">
+                <Label Content="Calendar week" />
+                <xctk:DoubleUpDown x:Name="doubleUpDownCalendarWeek" VerticalContentAlignment="Center" VerticalAlignment="Center"
+                                   HorizontalAlignment="Stretch" Margin="2" Value="01" ValueChanged="doubleUpDownCalendarWeek_ValueChanged"/>
+                <Label Content="Type" />
+                <ComboBox x:Name="comboBoxFilterType" Margin="2" SelectionChanged="comboBoxFilterType_SelectionChanged" Width="100" />
+                
+                <Button x:Name="buttonExcelExport" Margin="2" Click="buttonExcelExport_Click" Content="Export Excel" Width="100" />
+                <Button x:Name="buttonSaveChanges" Margin="2" Click="buttonSaveChanges_Click" Content="Save changes" Width="100" IsEnabled="False" />
+            </StackPanel>
+            <local:ENIDataGrid Grid.Row="1" Margin="2,8,2,2" x:Name="dataGridPOCores" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" 
+                                             SelectionMode="Single" AutoGenerateColumns="False" CellEditEnding="dataGridPOCores_CellEditEnding" CanUserAddRows="False">
+                <DataGrid.Columns>
+                    <DataGridTextColumn Header="IMO/ENI" Binding="{Binding IMOENIDisplay}" IsReadOnly="True" />
+                    <DataGridTextColumn x:Name="gridColumnPONumber" Header="PO number" Binding="{Binding PONumber, Mode=TwoWay}" IsReadOnly="False" />
+                    <DataGridComboBoxColumn x:Name="gridColumnGroup" Header="Group" IsReadOnly="False" SelectedValueBinding="{Binding Flags, Mode=TwoWay}"
+                                            ItemsSource="{StaticResource arrList}" DisplayMemberPath="Key" SelectedValuePath="Value">
+                    </DataGridComboBoxColumn>
+                    <DataGridTextColumn Header="Ship name" Binding="{Binding Shipname}" IsReadOnly="True" />
+                    <DataGridTextColumn Header="ETA" Binding="{Binding ETA_NOA_NOD, StringFormat=\{0:dd.MM.yyyy HH:mm\}, Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="True" />
+                    <DataGridTextColumn Header="ETD" Binding="{Binding ETD_NOA_NOD, StringFormat=\{0:dd.MM.yyyy HH:mm\},  Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="True" />
+                    <DataGridTextColumn x:Name="gridColumnATA" Header="ATA" Binding="{Binding POATA, StringFormat=\{0:dd.MM.yyyy\}, Mode=TwoWay, Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="False" />
+                    <DataGridTextColumn Header="ATD" Binding="{Binding ATD, StringFormat=\{0:dd.MM.yyyy HH:mm\}, Converter={util:UtcToLocalDateTimeConverter}}" IsReadOnly="True" />
+                    <DataGridTextColumn Header="Hafen" Binding="{Binding PortnameDisplay}" IsReadOnly="True" />
+                    <DataGridTextColumn Header="Id" Binding="{Binding DisplayId}" IsReadOnly="True" />
+                </DataGrid.Columns>
+            </local:ENIDataGrid>
+        </Grid>
+    </GroupBox>
+</UserControl>
diff --git a/ENI2/Controls/POListControl.xaml.cs b/ENI2/Controls/MaerskListControl.xaml.cs
similarity index 96%
rename from ENI2/Controls/POListControl.xaml.cs
rename to ENI2/Controls/MaerskListControl.xaml.cs
index 0985b92f..0ec89672 100644
--- a/ENI2/Controls/POListControl.xaml.cs
+++ b/ENI2/Controls/MaerskListControl.xaml.cs
@@ -1,278 +1,278 @@
-// Copyright (c) 2017 schick Informatik
-// Description: PO Nummer Übersicht. Ergänzung Nummern. Excel Export
-//
-
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.IO;
-using System.Windows;
-using System.Windows.Controls;
-using Microsoft.Win32;
-
-using Microsoft.Office.Interop.Excel;
-using System.Runtime.InteropServices;
-
-using bsmd.database;
-
-namespace ENI2.Controls
-{
-    /// <summary>
-    /// Interaction logic for POListControl.xaml
-    /// </summary>
-    public partial class POListControl : UserControl
-    {
-
-        #region Fields
-
-        private readonly string[] _comboBoxEntries = 
-        {
-            "All",
-            "Maersk BRV/WHV",
-            "SeaGo BHV",
-            "SeaGo WHV"
-        };
-
-        private List<MessageCore> searchResult = new List<MessageCore>();
-        private readonly List<MessageCore> filteredResult = new List<MessageCore>();
-
-        #endregion
-
-        #region Construction
-
-        public POListControl()
-        {
-            InitializeComponent();
-            Loaded += POList_Loaded;
-        }
-
-        #endregion
-
-        #region control event handler
-
-        private void POList_Loaded(object sender, RoutedEventArgs e)
-        {
-            this.comboBoxFilterType.ItemsSource = this._comboBoxEntries;
-            this.doubleUpDownCalendarWeek.Value = bsmd.database.Util.GetIso8601WeekOfYear(DateTime.Now);
-            this.dataGridPOCores.ItemsSource = this.filteredResult;
-        }
-
-        private void buttonExcelExport_Click(object sender, RoutedEventArgs e)
-        {
-            if (this.filteredResult.Count == 0) return;
-
-            OpenFileDialog ofd = new OpenFileDialog
-            {
-                Filter = "Excel Files|*.xls;*.xlsx"
-            };
-            if (ofd.ShowDialog() ?? false)
-            {                
-                try
-                {
-                    Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
-                    excelApp.DisplayAlerts = false;
-                    Workbook workBook = excelApp.Workbooks.Open(ofd.FileName);
-                    Worksheet workSheet = workBook.Worksheets[1];
-
-                    int rowIndex = 3;
-                    foreach(MessageCore core in this.filteredResult)
-                    {
-                        workSheet.Cells[rowIndex, 7].Value = core.Shipname;
-                        workSheet.Cells[rowIndex, 10].Value = core.PoC.Substring(2);
-                        if(core.POATA.HasValue)
-                            workSheet.Cells[rowIndex, 11].Value = core.POATA.Value.ToShortDateString();
-                        workSheet.Cells[rowIndex, 13].Value = core.PONumber;
-                        rowIndex++;
-                    }
-
-                    workBook.Save();
-                    workBook.Close();
-                    Marshal.ReleaseComObject(workBook);
-                    excelApp.Quit();
-                }
-                catch (Exception ex)
-                {
-                    MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
-                    return;
-                }
-            }
-        }
-
-        private void buttonSaveChanges_Click(object sender, RoutedEventArgs e)
-        {
-            foreach(MessageCore messageCore in this.filteredResult)
-            {
-                if (messageCore.IsDirty)
-                {
-                    DBManager.Instance.Save(messageCore);
-                    messageCore.IsDirty = false;
-                    // load ATA for this Core
-                    /* DAS ATA WIRD JETZT NICHT MEHR IN DIE MELDEKLASSE GESPEICHERT
-                    Message ataMessage = DBManager.Instance.GetMessage(messageCore, Message.NotificationClass.ATA);
-                    if(ataMessage?.Elements.Count == 1)
-                    {
-                        if(messageCore.ATA != ((ATA)ataMessage.Elements[0]).ATAPortOfCall)
-                        {
-                            ((ATA)ataMessage.Elements[0]).ATAPortOfCall = messageCore.ATA;
-                            DBManager.Instance.Save(ataMessage.Elements[0]);
-                        }
-                    }
-                    */
-                }
-            }
-            this.buttonSaveChanges.IsEnabled = false;
-        }
-
-        private void doubleUpDownCalendarWeek_ValueChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
-        {
-            if (!this.IsLoaded) return;
-            this.comboBoxFilterType.SelectedIndex = -1;
-            this.PerformSearch();
-        }
-
-        private void comboBoxFilterType_SelectionChanged(object sender, SelectionChangedEventArgs e)
-        {
-            this.dataGridPOCores.ItemsSource = null;
-            if (this.comboBoxFilterType.SelectedIndex == -1) return;
-
-            this.filteredResult.Clear();
-            foreach (MessageCore core in this.searchResult)
-            {
-                switch (this.comboBoxFilterType.SelectedIndex)
-                {
-                    case 0: this.filteredResult.Add(core); break;
-                    case 1: if (core.IsFlagSet(MessageCore.CoreFlags.MAERSK_BHV)) this.filteredResult.Add(core); break;
-                    case 2: if (core.IsFlagSet(MessageCore.CoreFlags.SEAGO_BHV)) this.filteredResult.Add(core); break;
-                    case 3: if (core.IsFlagSet(MessageCore.CoreFlags.SEAGO_WHV)) this.filteredResult.Add(core); break;
-                    case 4: if (core.IsFlagSet(MessageCore.CoreFlags.HOEGH)) this.filteredResult.Add(core); break;
-                }
-            }
-            this.dataGridPOCores.ItemsSource = this.filteredResult;            
-        }
-
-        private void dataGridPOCores_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
-        {
-            if (e.EditAction == DataGridEditAction.Commit)
-            {
-                if (e.Column == gridColumnPONumber)
-                {
-                    // validate for "true" number
-                    var el = e.EditingElement as System.Windows.Controls.TextBox;
-                    if (!el.Text.IsDigitsOnly())
-                    {
-                        el.Text = string.Empty;
-                        e.Cancel = true;
-                    }
-                    else
-                    {
-                        buttonSaveChanges.IsEnabled = true;
-                        MessageCore editedCore = this.filteredResult[e.Row.GetIndex()];
-                        editedCore.IsDirty = true;
-                    }
-                }
-                if(e.Column == gridColumnGroup)
-                {
-                    var el = e.EditingElement as ComboBox;
-                    DictionaryEntry selectedItem = (DictionaryEntry) el.SelectedItem;
-                    MessageCore.CoreFlags coreFlag = (MessageCore.CoreFlags) Enum.Parse(typeof(MessageCore.CoreFlags), selectedItem.Value.ToString());
-                    MessageCore editedCore = this.filteredResult[e.Row.GetIndex()];
-                    // clear all first
-                    editedCore.SetFlag(false, MessageCore.CoreFlags.MAERSK_BHV);
-                    editedCore.SetFlag(false, MessageCore.CoreFlags.SEAGO_BHV);
-                    editedCore.SetFlag(false, MessageCore.CoreFlags.SEAGO_WHV);
-                    editedCore.SetFlag(false, MessageCore.CoreFlags.HOEGH);
-                    if (coreFlag != MessageCore.CoreFlags.NONE)
-                    {
-                        editedCore.SetFlag(true, coreFlag);
-                    }
-                    buttonSaveChanges.IsEnabled = true;
-                    editedCore.IsDirty = true;
-                }
-                if(e.Column == gridColumnATA)
-                {
-                    var el = e.EditingElement as System.Windows.Controls.TextBox;
-                    if(DateTime.TryParse(el.Text, out DateTime localATA))
-                    {
-                        MessageCore editedCore = this.filteredResult[e.Row.GetIndex()];
-                        editedCore.ATA = DateTime.SpecifyKind(localATA, DateTimeKind.Local).ToUniversalTime();
-                        buttonSaveChanges.IsEnabled = true;
-                        editedCore.IsDirty = true;
-                    } 
-                    else
-                    {
-                        el.Text = string.Empty;
-                        e.Cancel = true;
-                    }
-                }
-            }
-        }
-
-        #endregion
-
-        #region private methods
-
-        private void PerformSearch()
-        {
-            this.dataGridPOCores.ItemsSource = null;
-            this.filteredResult.Clear();
-
-            if (!this.doubleUpDownCalendarWeek.Value.HasValue) return;
-
-            Dictionary<MessageCore.SearchFilterType, string> filterDict = new Dictionary<MessageCore.SearchFilterType, string>();
-
-            DateTime start = bsmd.database.Util.FirstDateOfWeekISO8601(DateTime.Now.Year, (int)this.doubleUpDownCalendarWeek.Value);
-            DateTime end = start.Add(new TimeSpan(6, 23, 59, 59));
-            
-            // Die Suche findet in einem erweiterten Intervall statt, da später wenn möglich nach ATA gefiltert wird
-            uint from = start.Subtract(new TimeSpan(10, 0, 0, 0)).ToUniversalTime().ToUnixTimeStamp();
-            uint to = end.Add(new TimeSpan(5, 0, 0, 0)).ToUniversalTime().ToUnixTimeStamp();           
-            filterDict.Add(MessageCore.SearchFilterType.FILTER_ETA, string.Format("{0}:{1}", from.ToString() ?? "", to.ToString() ?? ""));
-
-            Util.UIHelper.SetBusyState();
-
-            // suche auslösen
-            this.searchResult = DBManager.GetSingleCon(Properties.Settings.Default.ConnectionString).GetMessageCoresWithFilters(filterDict);
-            // alle anderen Häfen weg
-            this.searchResult.RemoveAll(item => (item.PoC == null) || (!item.PoC.Equals("DEBRV") && !item.PoC.Equals("DEWHV") && !item.PoC.Equals("DEWVN")));
-
-            // rückwärts iterieren um nach ETA und ATA zu filtern
-            if (this.searchResult.Count > 0)
-            {
-                for (int i = this.searchResult.Count - 1; i >= 0; i--)
-                {
-                    MessageCore messageCore = this.searchResult[i];
-                    if (messageCore.ATA.HasValue)
-                    {
-                        if ((messageCore.ATA.Value < start) || (messageCore.ATA.Value > end))
-                        {
-                            this.searchResult.RemoveAt(i);
-                        } 
-                        else
-                        {
-                            if(!messageCore.POATA.HasValue)
-                            {
-                                messageCore.POATA = messageCore.ATA;
-                                messageCore.IsDirty = true;
-                                this.buttonSaveChanges.IsEnabled = true;
-                            }
-                        }
-                    }
-                    else
-                    {
-                        if ((messageCore.ETA.Value < start) || (messageCore.ETA.Value > end)) this.searchResult.RemoveAt(i);
-                    }
-                }
-            }
-
-            searchResult.Sort((x, y) => DateTime.Compare(x.ATA ?? DateTime.MaxValue, y.ATA ?? DateTime.MaxValue));
-            
-            this.dataGridPOCores.SelectedItem = null;
-            this.filteredResult.AddRange(searchResult);
-            this.dataGridPOCores.ItemsSource = this.filteredResult;
-        }
-
-
-        #endregion
-        
-    }
-}
+// Copyright (c) 2017 schick Informatik
+// Description: PO Nummer Übersicht. Ergänzung Nummern. Excel Export
+//
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using System.Windows;
+using System.Windows.Controls;
+using Microsoft.Win32;
+
+using Microsoft.Office.Interop.Excel;
+using System.Runtime.InteropServices;
+
+using bsmd.database;
+
+namespace ENI2.Controls
+{
+    /// <summary>
+    /// Interaction logic for MaerskListControl.xaml
+    /// </summary>
+    public partial class MaerskListControl : UserControl
+    {
+
+        #region Fields
+
+        private readonly string[] _comboBoxEntries = 
+        {
+            "All",
+            "Maersk BRV/WHV",
+            "SeaGo BHV",
+            "SeaGo WHV"
+        };
+
+        private List<MessageCore> searchResult = new List<MessageCore>();
+        private readonly List<MessageCore> filteredResult = new List<MessageCore>();
+
+        #endregion
+
+        #region Construction
+
+        public MaerskListControl()
+        {
+            InitializeComponent();
+            Loaded += POList_Loaded;
+        }
+
+        #endregion
+
+        #region control event handler
+
+        private void POList_Loaded(object sender, RoutedEventArgs e)
+        {
+            this.comboBoxFilterType.ItemsSource = this._comboBoxEntries;
+            this.doubleUpDownCalendarWeek.Value = bsmd.database.Util.GetIso8601WeekOfYear(DateTime.Now);
+            this.dataGridPOCores.ItemsSource = this.filteredResult;
+        }
+
+        private void buttonExcelExport_Click(object sender, RoutedEventArgs e)
+        {
+            if (this.filteredResult.Count == 0) return;
+
+            OpenFileDialog ofd = new OpenFileDialog
+            {
+                Filter = "Excel Files|*.xls;*.xlsx"
+            };
+            if (ofd.ShowDialog() ?? false)
+            {                
+                try
+                {
+                    Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
+                    excelApp.DisplayAlerts = false;
+                    Workbook workBook = excelApp.Workbooks.Open(ofd.FileName);
+                    Worksheet workSheet = workBook.Worksheets[1];
+
+                    int rowIndex = 3;
+                    foreach(MessageCore core in this.filteredResult)
+                    {
+                        workSheet.Cells[rowIndex, 7].Value = core.Shipname;
+                        workSheet.Cells[rowIndex, 10].Value = core.PoC.Substring(2);
+                        if(core.POATA.HasValue)
+                            workSheet.Cells[rowIndex, 11].Value = core.POATA.Value.ToShortDateString();
+                        workSheet.Cells[rowIndex, 13].Value = core.PONumber;
+                        rowIndex++;
+                    }
+
+                    workBook.Save();
+                    workBook.Close();
+                    Marshal.ReleaseComObject(workBook);
+                    excelApp.Quit();
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                    return;
+                }
+            }
+        }
+
+        private void buttonSaveChanges_Click(object sender, RoutedEventArgs e)
+        {
+            foreach(MessageCore messageCore in this.filteredResult)
+            {
+                if (messageCore.IsDirty)
+                {
+                    DBManager.Instance.Save(messageCore);
+                    messageCore.IsDirty = false;
+                    // load ATA for this Core
+                    /* DAS ATA WIRD JETZT NICHT MEHR IN DIE MELDEKLASSE GESPEICHERT
+                    Message ataMessage = DBManager.Instance.GetMessage(messageCore, Message.NotificationClass.ATA);
+                    if(ataMessage?.Elements.Count == 1)
+                    {
+                        if(messageCore.ATA != ((ATA)ataMessage.Elements[0]).ATAPortOfCall)
+                        {
+                            ((ATA)ataMessage.Elements[0]).ATAPortOfCall = messageCore.ATA;
+                            DBManager.Instance.Save(ataMessage.Elements[0]);
+                        }
+                    }
+                    */
+                }
+            }
+            this.buttonSaveChanges.IsEnabled = false;
+        }
+
+        private void doubleUpDownCalendarWeek_ValueChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
+        {
+            if (!this.IsLoaded) return;
+            this.comboBoxFilterType.SelectedIndex = -1;
+            this.PerformSearch();
+        }
+
+        private void comboBoxFilterType_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            this.dataGridPOCores.ItemsSource = null;
+            if (this.comboBoxFilterType.SelectedIndex == -1) return;
+
+            this.filteredResult.Clear();
+            foreach (MessageCore core in this.searchResult)
+            {
+                switch (this.comboBoxFilterType.SelectedIndex)
+                {
+                    case 0: this.filteredResult.Add(core); break;
+                    case 1: if (core.IsFlagSet(MessageCore.CoreFlags.MAERSK_BHV)) this.filteredResult.Add(core); break;
+                    case 2: if (core.IsFlagSet(MessageCore.CoreFlags.SEAGO_BHV)) this.filteredResult.Add(core); break;
+                    case 3: if (core.IsFlagSet(MessageCore.CoreFlags.SEAGO_WHV)) this.filteredResult.Add(core); break;
+                    case 4: if (core.IsFlagSet(MessageCore.CoreFlags.HOEGH)) this.filteredResult.Add(core); break;
+                }
+            }
+            this.dataGridPOCores.ItemsSource = this.filteredResult;            
+        }
+
+        private void dataGridPOCores_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
+        {
+            if (e.EditAction == DataGridEditAction.Commit)
+            {
+                if (e.Column == gridColumnPONumber)
+                {
+                    // validate for "true" number
+                    var el = e.EditingElement as System.Windows.Controls.TextBox;
+                    if (!el.Text.IsDigitsOnly())
+                    {
+                        el.Text = string.Empty;
+                        e.Cancel = true;
+                    }
+                    else
+                    {
+                        buttonSaveChanges.IsEnabled = true;
+                        MessageCore editedCore = this.filteredResult[e.Row.GetIndex()];
+                        editedCore.IsDirty = true;
+                    }
+                }
+                if(e.Column == gridColumnGroup)
+                {
+                    var el = e.EditingElement as ComboBox;
+                    DictionaryEntry selectedItem = (DictionaryEntry) el.SelectedItem;
+                    MessageCore.CoreFlags coreFlag = (MessageCore.CoreFlags) Enum.Parse(typeof(MessageCore.CoreFlags), selectedItem.Value.ToString());
+                    MessageCore editedCore = this.filteredResult[e.Row.GetIndex()];
+                    // clear all first
+                    editedCore.SetFlag(false, MessageCore.CoreFlags.MAERSK_BHV);
+                    editedCore.SetFlag(false, MessageCore.CoreFlags.SEAGO_BHV);
+                    editedCore.SetFlag(false, MessageCore.CoreFlags.SEAGO_WHV);
+                    editedCore.SetFlag(false, MessageCore.CoreFlags.HOEGH);
+                    if (coreFlag != MessageCore.CoreFlags.NONE)
+                    {
+                        editedCore.SetFlag(true, coreFlag);
+                    }
+                    buttonSaveChanges.IsEnabled = true;
+                    editedCore.IsDirty = true;
+                }
+                if(e.Column == gridColumnATA)
+                {
+                    var el = e.EditingElement as System.Windows.Controls.TextBox;
+                    if(DateTime.TryParse(el.Text, out DateTime localATA))
+                    {
+                        MessageCore editedCore = this.filteredResult[e.Row.GetIndex()];
+                        editedCore.ATA = DateTime.SpecifyKind(localATA, DateTimeKind.Local).ToUniversalTime();
+                        buttonSaveChanges.IsEnabled = true;
+                        editedCore.IsDirty = true;
+                    } 
+                    else
+                    {
+                        el.Text = string.Empty;
+                        e.Cancel = true;
+                    }
+                }
+            }
+        }
+
+        #endregion
+
+        #region private methods
+
+        private void PerformSearch()
+        {
+            this.dataGridPOCores.ItemsSource = null;
+            this.filteredResult.Clear();
+
+            if (!this.doubleUpDownCalendarWeek.Value.HasValue) return;
+
+            Dictionary<MessageCore.SearchFilterType, string> filterDict = new Dictionary<MessageCore.SearchFilterType, string>();
+
+            DateTime start = bsmd.database.Util.FirstDateOfWeekISO8601(DateTime.Now.Year, (int)this.doubleUpDownCalendarWeek.Value);
+            DateTime end = start.Add(new TimeSpan(6, 23, 59, 59));
+            
+            // Die Suche findet in einem erweiterten Intervall statt, da später wenn möglich nach ATA gefiltert wird
+            uint from = start.Subtract(new TimeSpan(10, 0, 0, 0)).ToUniversalTime().ToUnixTimeStamp();
+            uint to = end.Add(new TimeSpan(5, 0, 0, 0)).ToUniversalTime().ToUnixTimeStamp();           
+            filterDict.Add(MessageCore.SearchFilterType.FILTER_ETA, string.Format("{0}:{1}", from.ToString() ?? "", to.ToString() ?? ""));
+
+            Util.UIHelper.SetBusyState();
+
+            // suche auslösen
+            this.searchResult = DBManager.GetSingleCon(Properties.Settings.Default.ConnectionString).GetMessageCoresWithFilters(filterDict);
+            // alle anderen Häfen weg
+            this.searchResult.RemoveAll(item => (item.PoC == null) || (!item.PoC.Equals("DEBRV") && !item.PoC.Equals("DEWHV") && !item.PoC.Equals("DEWVN")));
+
+            // rückwärts iterieren um nach ETA und ATA zu filtern
+            if (this.searchResult.Count > 0)
+            {
+                for (int i = this.searchResult.Count - 1; i >= 0; i--)
+                {
+                    MessageCore messageCore = this.searchResult[i];
+                    if (messageCore.ATA.HasValue)
+                    {
+                        if ((messageCore.ATA.Value < start) || (messageCore.ATA.Value > end))
+                        {
+                            this.searchResult.RemoveAt(i);
+                        } 
+                        else
+                        {
+                            if(!messageCore.POATA.HasValue)
+                            {
+                                messageCore.POATA = messageCore.ATA;
+                                messageCore.IsDirty = true;
+                                this.buttonSaveChanges.IsEnabled = true;
+                            }
+                        }
+                    }
+                    else
+                    {
+                        if ((messageCore.ETA.Value < start) || (messageCore.ETA.Value > end)) this.searchResult.RemoveAt(i);
+                    }
+                }
+            }
+
+            searchResult.Sort((x, y) => DateTime.Compare(x.ATA ?? DateTime.MaxValue, y.ATA ?? DateTime.MaxValue));
+            
+            this.dataGridPOCores.SelectedItem = null;
+            this.filteredResult.AddRange(searchResult);
+            this.dataGridPOCores.ItemsSource = this.filteredResult;
+        }
+
+
+        #endregion
+        
+    }
+}
diff --git a/ENI2/Controls/MaerskOverviewControl.xaml b/ENI2/Controls/MaerskOverviewControl.xaml
new file mode 100644
index 00000000..766efbdc
--- /dev/null
+++ b/ENI2/Controls/MaerskOverviewControl.xaml
@@ -0,0 +1,12 @@
+<UserControl x:Class="ENI2.Controls.MaerskOverviewControl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:ENI2.Controls"
+             mc:Ignorable="d" 
+             d:DesignHeight="450" d:DesignWidth="800">
+    <Grid>
+            
+    </Grid>
+</UserControl>
diff --git a/ENI2/Controls/MaerskOverviewControl.xaml.cs b/ENI2/Controls/MaerskOverviewControl.xaml.cs
new file mode 100644
index 00000000..79cf4f50
--- /dev/null
+++ b/ENI2/Controls/MaerskOverviewControl.xaml.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace ENI2.Controls
+{
+    /// <summary>
+    /// Interaction logic for MaerskOverviewControl.xaml
+    /// </summary>
+    public partial class MaerskOverviewControl : UserControl
+    {
+        public MaerskOverviewControl()
+        {
+            InitializeComponent();
+        }
+    }
+}
diff --git a/ENI2/ENI2.csproj b/ENI2/ENI2.csproj
index 6b5c5246..724287f6 100644
--- a/ENI2/ENI2.csproj
+++ b/ENI2/ENI2.csproj
@@ -228,6 +228,9 @@
     <Compile Include="Controls\LocodeControl.xaml.cs">
       <DependentUpon>LocodeControl.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Controls\MaerskOverviewControl.xaml.cs">
+      <DependentUpon>MaerskOverviewControl.xaml</DependentUpon>
+    </Compile>
     <Compile Include="EditControls\CompareExcelDialog.xaml.cs">
       <DependentUpon>CompareExcelDialog.xaml</DependentUpon>
     </Compile>
@@ -249,8 +252,8 @@
     <Compile Include="Excel\ExcelManager.cs" />
     <Compile Include="Excel\ExcelReader.cs" />
     <Compile Include="Excel\ExcelUtil.cs" />
-    <Compile Include="Controls\POListControl.xaml.cs">
-      <DependentUpon>POListControl.xaml</DependentUpon>
+    <Compile Include="Controls\MaerskListControl.xaml.cs">
+      <DependentUpon>MaerskListControl.xaml</DependentUpon>
     </Compile>
     <Compile Include="Controls\ReportingPartyControl.xaml.cs">
       <DependentUpon>ReportingPartyControl.xaml</DependentUpon>
@@ -458,7 +461,11 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
-    <Page Include="Controls\POListControl.xaml">
+    <Page Include="Controls\MaerskOverviewControl.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
+    <Page Include="Controls\MaerskListControl.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
diff --git a/ENI2/MainWindow.xaml.cs b/ENI2/MainWindow.xaml.cs
index f54b77e9..3d81c257 100644
--- a/ENI2/MainWindow.xaml.cs
+++ b/ENI2/MainWindow.xaml.cs
@@ -35,7 +35,7 @@ namespace ENI2
         #region Fields
 
         private ReportingPartyControl rpControl;
-        private POListControl poControl;
+        private MaerskOverviewControl moControl;
         private ServerStatusControl statusControl;
         private readonly SucheControl sucheControl;
         private CompareExcelDialog compareExcelDialog;
@@ -281,11 +281,11 @@ namespace ENI2
             }
             else if(sender == this.buttonPOListe)
             {
-                if (this.poControl == null)
+                if (this.moControl == null)
                 {
-                    this.poControl = new POListControl();
+                    this.moControl = new MaerskOverviewControl();
                 }
-                this.rootContainer.Children.Add(poControl);
+                this.rootContainer.Children.Add(moControl);
             }
             else if(sender == this.buttonStatus)
             {