So I don't totally understand how these work. Both pieces are magnetic, or just the text part in the middle?
I've been using a different label system and they don't stay on the MFC very well. They're prone to getting jostled and they come off partially, which ends up creating problems. That's not the case with these?
In some ways, I'd like to see a system where the "surround" is some sort of sticker or something that will stay almost no matter what, and then the text bit is just the think that gets changed. That way I could be confident they wouldn't move around, but I would still have the flexibility of changing where my IAs are.