So I was doing a siege and at a point the host migrates. When I can respawn, my engineer only has an acr, a frag and a sentry gun that I haven't unlocked yet.
And then the game freezes. So I say well let's rebbot, might be a random weird bug that happens at times.

Wrong.

I had a rifleman level 50 with multiple respec tokens used ( so ghost had ak47, a91, s805(?) ; bodark mk14, stoner 96, f2000 and another one. ) and the double decision point on l 32 rifleman. A second rifleman was lvl 6. I had an engineer lvl 31 and a recon lvl 30.

Now the two riflemans are still there, no problems as of now, but the engineer is now a level 81 rifleman with only acr, f2000, m60 and some other weapon, frags and a sentry gun. Oh and 99 unlock credits.
My recon is now a level 0 rifleman with 99 credits also.

It took me 2 months(casual gamer) to reach the point I did, would be a shame if I lost all.

Info:
Xbox 360
Uplay Maraud3rB3 GT Maraud3rFTW
I was trying for a challenge of doing better than 0 kills in siege, and succeded ( gave me the 30 uplays) .
I have the signature edition weapons, arctic strike dlc, double decision and m60/rpk uplay dlcs.
Pics to come