Moving a leather

[Delphinus]

I want to move a leather out of one tank into another. Not really a big deal, done it a few times before, but the problem is it's grown (very nicely) onto a rock I don't want to move along with the coral (it would involve a major reaquascaping project plus the removal of about 6 SPS corals also on this rock [it is a nice big rock]). No, I guess the rock stays put.

Anyways, since it's always been attached to a small rock that I would just move in previous times, obviously I need to think about peeling the leather off. Is this a bad idea? How hard will it be to remove off the rock, and how much risk for damage to the coral if I do that?

It obviously grew onto the rock it's on now, so I am assuming that if the coral can be placed adequately, and in a gentle enough flow so as not to move it around, it will eventually re-attach.

I'm just in the "thinking about it" stages right now, there's no hurry. But please tell me if there are any holes or flows in my logic here.

Thanks...