Oh wait. You're right. Sorry.
Have the mini's walk over the segements to make them disappear. If you need to, the minis can jump over the holes where the segments were, but only on the bottom screen. Once they hit the top screen, they should just know which direction to go in (towards the segements). I know it can get a little crazy, but the hammers are a big help, as well as concentrating on getting one Mini up at a time.