Everytime i quit MP it delete around 20K exp.
I lost around 200K now and thats why i am writting here.
I am pissed cuz this is time wasted.
Crytek did nice job making MP eat your stats...
How are you exiting the game? I always exit the multiplayer, then quit from the main menu and I haven't had any issue with this. (Always let the little spinning yellow icon disappear before quitting.)