So before I patched to IW5M I made a fresh install.

But sadly I lost all my classes and multiplayer progression.

 

I still have my old copy so any way I can manually copy my classes from old Modern warfare 3 copy to my new one?

Bump......

Don't bump and read all the other posts about it.

Nope, no way you can import stats. You do have XP x4 so you can re-create your stats in no time.

Steam stats are easily hackable, and allowing them to import is the same as level hacking. That's why IW5M has a reset stats feature on startup along with a no-import policy. Your x4 XP and playing on (near) hacker-less servers makes up for it.