Well, I have absolutely no idea why I managed to get it to work but,
all I did was this:
Changed this code:
- (IBAction)saveChanges:(id)sender
{
[[[myDoc managedObjectContext] undoManager] endUndoGrouping];
[[[myDoc managedObjectContext] undoManager] setActionName:@"Item
Editing"];
I'm trying to set up undo grouping properly for my editing dialog
(i.e. when a user edits a ManagedObject, the whole editing process can
be undo...)
I've read a couple of articles/tutorials about using undo grouping for
Core Data but they all involved 2 things: An editing window/sheet and
a