Just the .pkm; the issue I had was I couldn't GET the Arceus into a .pkm file, because I couldn't upload him to the fake GTS.
Actually, if you had the rest of those guys as .pkm in Gen4 that'd both save us a lot of time and with the Jirachi save me the same headache, as I bet that one has the same ribbon. And then we'd just have to meet in Gen5 and I'd trade you my guys + any of those you don't have in Gen4. If that's okay with you, though.