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Well, it’s been a long two or three days, but I’ve finally got a working method to copy arbitrary graphs of NSManagedObjects (and subclasses). It relies on you having set ownership properly via the delete rule– that is, a cascade delete rule says “I own this object”, since the referenced object will go away if you delete the receiver. But that’s all– you just set up your model and run.

I’ve updated the code slightly and put it on github []. Note that I haven�t tested my changes beyond compilation, and this is at any rate old, somewhat messy code; your mileage may vary. That said, if you find bugs with it and fix them, I am happy to accept patches!

Enjoy! – RobRix (Updated the link again. Sorry to all those who hit the old dead URL on my server�)