Also sometimes the saves are only located in the game main folder, not in AppData\Roaming to share it w/ new updates.
If you get rid of the Games folder you'll end up w/o any saved games.
Always make sure in which location the game saves its data.
When there is a new update to a game, there's usually a Dev note saing you can't use saves below x.x version.
Make sure to read the OP entirely after updates.