Added following test in ChangeTrackingCollectionTests:

Adding_And_Removing_The_Same_Territory_Should_Not_Keep_Added_Territory_In_Territory_Collection

Updated RemoveItem in ChangeTrackingCollection so that removed m-m items with TrackingState.Added are not cached in the _deleted collection. Test now passes.

Author: Anthony Sneed

Source/TrackableEntities.Client/ChangeTrackingCollection.cs

@@ -235,13 +235,15 @@ protected override void RemoveItem(int index)
                 item.SetTracking(false, visitationHelper.Clone(), true);
 
                 // Mark item and trackable collection properties
+                bool manyToManyAdded = Parent != null && item.TrackingState == TrackingState.Added;
                 item.SetState(TrackingState.Deleted, visitationHelper.Clone());
 
                 // Fire EntityChanged event
                 if (EntityChanged != null) EntityChanged(this, EventArgs.Empty);
 
                 // Cache deleted item if not added or already cached
                 if (item.TrackingState != TrackingState.Added
+                    && !manyToManyAdded
                     && !_deletedEntities.Contains(item))
                     _deletedEntities.Add(item);
             }