Vorbereitungen werden in Schlauchliner gespeichert

DaSaSo.ViewModel/Controls/SewerRhebalationControllViewModel.cs

@@ -83,5 +83,10 @@ namespace DaSaSo.ViewModel.Controls
             SewerPreperationControllViewModel = new SewerPreperationControllViewModel(model.PreparationType);
             _date = model.Date.ToDateTime(new TimeOnly(0));
         }
+        public override void Dispose()
+        {
+            model.PreparationType = SewerPreperationControllViewModel.CalculatePreparationFlags();
+            base.Dispose();
+        }
     }
 }