I think if you put item on a pokemon and clone it, you end up with 2 items too. If I can find someone to clone for us and i have the items I'll get you copies no problem. I'm a completionist though so I don't like swapping items out of my game unless I'm restarting it and don't need them, all the plates are really useful. I'm sure you could mine them in BW2 though, is this not possible in current gen too?