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- one-to-many relationships now maintain a list of positive parent-child associations within the flush, preventing previous parents marked as deleted from cascading a delete or NULL foreign key set on those child objects, despite the end-user not removing the child from the old association. [ticket:1764] - re-established Preprocess as unique on their arguments, as they were definitely duped in inheritance scenarios - added a "memo" feature to UOWTransaction which represents the usual pattern of using the .attributes collection - added the test case from [ticket:1081] into perf/