Core Data and NSOperation

Question

I\'m currently working with an NSPersistentDocument subclass that uses NSOperation to import data in the background. As per the documentation, I\'m obs

Answer 1

Have you tried setting up a temporary file URL when setting up the coordinator? You should be able to undo the -mergeChangesFromContextDidSaveNotification: on the main thread. No need to register an undo manager for the MOC on the background thread.