I am not sure if you can carry over your save files on Itch.io. unfortunately. I know that on Steam, that stuff carries over automatically. If inside of your game folder, there is a save file, then look for it and try and copy and paste that folder from your old project to the new. On Itch.io, there is no server to update it into, so there may be a possibility of having to start over on updates. Personally, if you mind that, I would hold off until the game is completed to do it all in one go. But, if you're able to re do things quicker, then it may be easier for you to play again. I hope that you are able to transfer your files over, but I am not sure that this was the case for Euclyca. Early access games on 3rd party websites can be a bit weird especially with limited programs. I'll probably implement a chapter selection system in the future, so that people who lose their saves can go back to them or if they want, to skip ahead.