The Xros Arena game can take digimon data from your Xros Loader as well as AR codes! [you need to go to a different floor to do this though.] Here are my 3 teams; I've only maxed out Neptunemon's level, the others are still low levels ^^; I'm unsure if there's a way to take trained leader digimon from Xros Arena back into your Xros Loader. Ally digimon get turned into collectible medals [I don't know if they do anything else ^^;]