It's not possible. After a Pokemon is migrated to diamon pearl or platinum, it can't be brought back
no you can't but you can migrate in into diamond and then trade it.
correct me if im mistaken but if you take silver and firered for example and trade them then u firered to diamond
No, you will need to trade it as soon as its on pokémon diamond
yep if u got a USB cord
trade from heartgold, soulsilver, firered, and leafgreen
You get Entei only on Diamond by Transfer it from LeafGreen and FireRed or trade it with Soulsilver and HeartGold
First, you have to trade your Pokemon Colosseum with Ruby/Sapphire (And I think Leafgreen/Firered too) Once you do that, you have to get the Pokemon to leafgreen/firered, and then migrate them to Pokemon diamond/pearl. For this though, you have to had beaten the games.
No. The Nintendo DS doesn't have a slot for a cable trade anyway.
You have to Transfer it from LeafGreen/FireRed or trade it with Platinum/HeartGold/SoulSilver
no no You can migrate Pokemon from any GBA game to Diamond or Pearl, but not trade. you still get the Pokemon on diamond but you will not put new Pokemon in red
No. But you can trade from FireRed, LeafGreen, Sapphire, Ruby or Emerald to Diamond, Pearl or Platinum
You can't trade directly to Pokemon Colosseum. You need a GBA and a 3rd generation game (Emerald, FireRed, LeafGreen, etc.) and the GBA adapter cable to connect with the Gamecube. You can trade to there and then migrate the Pokemon to your Diamond.