Woo I grabbed a physical copy this AM and have been playing it a bit this afternoon. So many cool things in the game, ahhhh
I can confirm one tiny thing:
Only up to 10 of each type of offering will move over. I think I had 14 or so of the healing seeds (I think that's what they are called) but only 10 came over. So boost them or loose them!
Feel free to add me, I'm PsySal on PSN.
EDIT: Other than that, just start the full game up, choose "new game", it will detect your saved demo (don't delete it until you move it over) and ask if you want to use that. You get three slots in the full game.