You can migrate to Platinum on Diamond, Pearl, and Emerald after you beat the Elite 4, but the rest I'm not sure. If I find out I'll promise to tell you!
Yes of course you can
You can migrate it from Ruby/Sapphire/Emerald. migrate it onto platinum from leafgreen firered ruby emerald or Sapphire or use the cheat. signed:pokemonexpert
if you want to migrate, all you have to do is place in the gba game e.g. leaf green and keep Pokemon platinum in the ds, then you go onto platinum and then on the menu, you have an option saying "migrate from leaf green" or whatever game you have put in and then choose six Pokemon, then it will go back to the menu and, then go to pal park and there you have it.
no. If you have a Pokemon gameboy game migrate deoxys onto platinum and go to pal park on rt 221 and find it in the grassland area.
you trade not migrate from platinum and you do that by going upstairs in the poke center
yes you can migrate from any of the emerald Sapphire and the other on to platinum
You need to go to pal park in Pokemon platinum to migrate.
you migrate it
If chaos black in Nintendo licensed (I don't think it is) then you would be able to. But because it is not Nintendo licensed then you would not be able to migrate it.
you have to migrate it from emerald
migrate
you cannot get a treeko in platinum but you can get it if you migrate from leaf green.