Got my copy of this game. Having so much fun with it. Level 100 miasma in Gauntlet Mode is insane O_o
If you have the PS3 version and are having difficulty with WO3 DLC transferring over, delete the game install of the original WO3, then re-download all of your purchased DLC. When you boot WO3U back up after that, the DLC will be there. This method worked for me. For reference, I had already transferred my WO3 game save and started playing before I was told about this and fixed the DLC.