I just upgraded to this new version, for anyone using RetroPie and Vice:
I made a copy of any D64 disk and renamed it to BrileySave.D64, copied it to the Pi, and in Vice go to the disk drive and tell it to create new disk, then select the BrileySave.D64 and it will overwrite it. Then you can load the first version of Briley, save the game to the new disk and load the save in the new version of the game with no probs and go back to saving on the cart if you wish.