Help wanted. um so I have a ridiculously old version of the game and when I tried to import the save it just said cant find Clan_cats.json! so um ya here are the two versions: can you help please. If you need more info just ask!
You might want to join the discord and ask there; in old versions the cat file was saved as a txt and not a json. There is some backwards compatibility between saves but if they are too far different there are some tools the community uses to version up old save files