I meant that the save files are there so that returning players do not have to start all the way from the beginning if they played an older version of the game. Save files created in a previous version will cause all sorts of unforeseen issues.
So, you can either start a fresh save file or use the included files to start at a point closer to where you last left off (in your old save file).
Alternatively, my patrons have access to a developer room with cheats and skips to get you even closer to the point you were before without any compatibility issues.