I've been thinking about buying a pokémon bank pass, but there's something I want to know first... The first 3ds I owned had some of my 3ds Pokémon games registered to my old Nintendo ID. Now that the 3ds I have is broken and my old account gone, I'm worried if the 3ds games I previously used won't work on my new Nintendo ID on Pokémon Bank. Can I still use a Pokémon game that was used on a previous Pokémon Bank account?
You can freely use any Pokémon game on any bank account. They are not locked to any poke bank account as far as I am aware. I used this to help some friends with their Pokedexes.