🚀 go-pugleaf

As far as i could comprehend your problem - you want to change the order of layers on changing the state by rollover. This can not be done directly through Photoshop. But you can accomplish the same effect by doing something like this.
Lets say you have three layer sets(A, B and C) with A on top of B and C.
If you want B to be above A as an effect of the rollover-
1. Duplicate layer B (say B1') and place it above A. Let it remain hidden for the normal state and the original layer B visible.
2. For the roll over state, you can make the duplicate layer B' visible and hide the original layer B.

This will give you an effect similar to the one you might get on actually changing the layer position.

You can give in more specific details for a closer look.