Depend if those files are downloaded to dev_hdd0 or not. I don't know anything about that game, but i.e Little Big Planet have level editor and players can share their levels with others. The problem is, those are never downloaded to user partition and cache partition is highly used by every game. Plus I believe there are also some security mechanisms which prevent such transplantation. Servers are now dead for LBP1 and LBP2 so all those levels gone for good, they aren't even saved in owner saves but in USRDIR in game/patch/dlc dir.