Hello, it may be possible but I would advise against it, because the game changes a lot during developpement, so saves on 7.5 might have some difficulties on a more recent version.
Okay, I'll still test it to see and if it doesn't work, I'll start again with the new version.Just that I saw that the introduction and certain choices are different at the start of the game, notably the harem route, for that I would like to keep the relationships already acquired.