Bit confused here...On Master-Satelite config, all licenes are on Master site. Satelite should have only release license...
If sum of all users on Master+Satelite config exceeds 35 users, you need expansion license but on Master, not Satelite.
If you already applied license on Satellite system, they can't be used anymore in new setup. You have to order new set of licenses and apply all to Master (unless Mitel come to play and re-assign license but don't hold your breath, tried that and got answer that can't be done).
BR