I have object A that has a to-many relationship to B. So, A
contains Bs.
I fetch A that contains one B. Then, I add another B to the
relationship. Some other app deletes the B that was there before,
and saves changes. When I save changes on my app, I get an
exception saying that the first B (the one that got deleted by the
other app) is not registered in any editing context.
How do you handle this kind of problem?
By not disabling merging of changes. :-)
(I don't know if it's relevant, but the merging of changes is
disabled for the context).
I guess that it is relevant, though I don't recall doing this.
