Remove old shipcalls if time filter ETA FROM is cleared again

src/BreCalClient/MainWindow.xaml.cs

@@ -590,6 +590,8 @@ namespace BreCalClient
             else
             {
                 searchPastDays = 0;
+                if (sfm.EtaFrom == null)
+                    sfm.EtaFrom = DateTime.Now.AddDays(-2);
             }
 
             this._visibleControlModels.Clear();