Hi developer, if you read this, this is for you.
Your games are good and the art and tastes are exciting.
Corruption games like this and the others you make are meant to be long as the corruption is more fun when it is sufficiently slow. And your games are long very long, as they should be!
But just for this reason, please man, take a bit of your time and use it to learn how to safely port saves between versions, 90% of RPGM devs do that, and you, one of my favourites, are still unable to accomplish this objective. Please!
Oh and of course try possibly to proceed chronologically,
restarting a long game to see updates located somewhere in the middle is really boring. With well made saves we (players) can partially solve this, but without saves.
a fan of yours
PS of course i tried to launch a save file and didn't work as you warned in notes