You can't. You are unable to transfer any Pokemon from a DS game to a Gameboy Advanced game. You can, however, transfer a Pokemon from a Gameboy Advanced game to a DS game.
you need to migrate it off of Pokemon Ruby or Saphirre
You can't migrate from HeartGold to Ruby. But it can be the opposite. Pokemon can be migrated from Pokemon Ruby to Pokemon HeartGold.
Yes, you can migrate Pokémon into HeartGold.
give 'em 2 ur migrating Pokemon from saphirre, leafgreen, firered, etc.
Migrate raquaza
Yes
You don't you have to migrate to get sinnoh pokemon.
Trade from HeartGold or migrate it.
you need to migrate it from sappire
migrate and trade
you cant unless you migrate
You cannot migrate or transfer Spiritomb from Pokémon Ranger Shadows of Almia over to Pokémon HeartGold.