Originally posted by another user
already mentioned before
1.on XMB go to the game section and then saved data utility (PS3)
2. copy the blackops saved game to a usb stick.
3. start up black ops, on multiplayer click player card and prestige.
4. exit blackops, and go back to the saved data utility and choose the usb device and copy the save back to your ps3.
5. go online and rank til you unlockreate a class and your old classes *may* be there
Originally posted by another user
Just try, is my theory