Question: how to transfer pokemon from ds to 3ds?
Answer: Download the Poké Transporter app for your Nintendo 3DS. Put any Pokémon you want to transfer in Box 1 of your desired game, and move any Pokémon you don't want to transfer out of the box. Open up the Poké Transporter app and it will prompt you to move all the Pokémon to Pokémon Bank.