you have to go to the pal park and enter the catching show it's in route 221
It depends if you migrated it or not
You have to migrate them, or trade with a person who migrated it.
no sorry
catch them in pal park. to check which region they are in use <www.serebii.net>
It's not possible. After a Pokemon is migrated to diamon pearl or platinum, it can't be brought back
I'd say mewtwo
Yes. it does allow you to catch a lv.1 regigigas
you cant get them unless you migrated or you usec the toys r us event
no. just go to the pal park and then go around the places which are similar to the type of the migrated Pokemon
Nope, Pokémon who evolve via trading them will not evolve if you migrate them into Pokémon Diamond, Pearl or Platinum.
No, items can't be migrated, but if you migrate Shaymin across, take it to Lacunosa Town's Pokemon centre, a woman inside will give you the Gracidea.
it ispossible i have Pokemon platinum on my R4 and i migrated Pokemon from Pokemon ruby and it worked but first u need the pal pad you can get that when you have finished the sinnoh pokedex.