Yes, debe is correct as I went through this process after buying a MacBook Pro dual intels. You’ll be required to return your original software discs to Apple: FCP, STP, DVD Pro, Motion 2. What I did was make disc images to DVDs incase something happens. I have yet do install the Cross Grade on my G5, have you done so yet? As I’m looking for posts here about tips or bugs.
The CG version is working well on my laptop.