[SOLVED]stats edited

hello

whilst playing today i came across a modded server, it was laggy so i left. when i check the barracks, all my challenges (including prestige) had been reset, and the score, kills, deaths etc were at -420420420.

Is there any way i can reverse this?

also i did a backup of my computer yesterday, would going back to it restore the normal stats?

thanks

EAM / Trainer.

:|
No other way?