Or remove the transient attribute, which I believe will only break undo/redo, which you would then have to implement yourself for the custom attribute. I'm no authority on the subject though, so someone please correct me if I'm wrong here.
- Dan
As far as I know there's no way to suppress this warning. Feel free
to file a bug (http://bugreport.apple.com) if this is a problem for you.
If you absolutely must avoid the warning, you could do so by
programatically creating the transient attribute at runtime before
loading the model into your persistent store coordinator.
