i did p much the same, played the original first. that one is Hermione only.
if you want to try other versions, i strongly suggest to put them nicely separated into separate folders, else you create a mess. if you try to copy Silver into the Akabur original, you for sure create something buggy which likely won't even start. i have them both here, different folders (by name) and the saves don't interfere with eachother. for updates, i simply clear out the game folder and copy the new version in. normally, Ren'Py finds the old saves by itself.