Bit of a question about CRAUs as it has come up several times as a result of the testdrive. Is it possible to only remember bits and pieces of a CRAU history?

For example you were in a game for a while but you don't want your character remembering everything that happened while they were in that other game. However you wouldn't mind remembering a character or two, or an adventure they had together. Maybe even gradually remembering these things over time or as the result of a spell? Would that be possible or does that make it too complicated?