I tried loading one of the back up saves in the folder and it worked for me (sorry if it doesn't for you)
I got it to load normal! I had to edit the profile.json and just remove a bracket, and rename the backup saves, as well as paste them in so there would be actual backups, and not it runs fine and maintains the gallery/achievements! Thanks for your help! I don't know why the backup saves totally glossed by my head lol