Hang in there. We've decided that the best way to avoid that pain is to move them all to an online database.
That means the single player profiles too?
Then I made two, one SP and one MP profile. For some time the singleplayer worked fine and I got my points and achievements.
But now both profiles are broken, and my MP profile override the whole SP. For what can I make more than one profile, when they are useless and affect each other????

EDIT: sigh, it just piss me off, I just started the game to look after my profiles, and now my SP profile is back to normal. Thats good, but all this stuff piss me off.
I played in the beta, but half of the game wasnt ready to test. We just could play a little online. So we never seen this bugs. that mean we now are playing the real beta. So sad..,