If you carried over your "persistent" save file, they should still be unlocked.
wait, i've just follow the guide and copy all of them. do I need to manually select that so called "persistent" file?
or do I have to follow step 6, I skipped that part since some of my saves are already working.
Uhm, I don't know, honestly. Quite a few people report losing their unlocked gallery scenes and I don't know why. If your saves already work then just leave it as is I'd say.
aight, thank you.