It wouldn't have transferred the license - try putting the old drive in and see if they work.
If they do, copy the whole thing over FTP and then copy THAT to the new drive - see if that works.
The annoying part is that I slightly prepared for this in advance by making a SATA Male/female extender cable, so if necessary, I could A/B switch my internals( the 500gig for BM and my original 60gb which has all my PSN games) Well, that worked out quite well the SATA easy switching part, but when I loaded the 60gig drive original back in the ps3 , it friggen tells me on all my games that I need to activate them again. big piss off to me., . Anyway just saying I think from what I had happen to me is that if u remove and insert another drive and then put the original back, it's possible that somehow it seems to deactivate the purchases. Just be careful, might happen to someone else, it's really annoying.
you should have copied ur registry files over and tha thsould have kept the activation stuff
You should definitely try putting the original hd back in and cross your fingers that your PSN games are still activated and working. Hopefully you wont run into the issue i had. Please do tell if your retails are still good on your original drive, that would shed some light on mine and explain a bit more to me if it's an isolated issue or constant issue. Good Luck
If your retails are still working when you put your original drive back in, consider yourself lucky, and you definitely wanna take the advice they gave you of yanking all the files off it to transfer to the new, might work that way I never thought about i, should have done that myself instead of using Sony's BACKUP with it's evil hidden features..