Ok, so i recently completed a weapon challenge (M4A1 - 2500 kills) and i'm wondering, i have that challenge completed and have received the title to go along with it, if i prestige (Rank 77 at time of writing) will the challenge for the 500+ head shots continue onto my first prestige or do i have to start gaining them all over again, 300+ head shots so far and i don't exactly want to lose them.

any replies will be welcomed. cheers.