Currently Being ModeratedMar 7, 2013 1:18 AM (in response to willieevans)
To get all the loops back into GB, you just drag them onto the Loop browser, they will all be re-indexed.
A more annoying problem (at least it happened to me the last time I migrated) may be that the instruments from the Jam Packs are also gone - in my case, the Migration Assistant didn't copy the Instrument Library over to the new machine. I think that happens when GB is already installed on the new computer when you migrate. I manually copied the old Instrument Library over, and that fixed the problem. Do you still have access to the old computer's data?