To all MW3 fans,

Hi! I know this is kind of a newbish question and I probably will find out myself sooner or later. I just wanted to know the answer before-hand.

Question: Will I be able to retain all my challenges after I unlock and gear then Prestige?

Say, I unlocked a gear, ex MP7. After playing for a while I'm at lvl80 again and ready to prestige. I wanted to know if I will be able to keep all the challenges I've done for the unlocked MP7 if I prestige.

Thank you all for helping!