No, you don't need to back up Final Fantasy 7 before installing Windows 7.
No, you don't need to back up Final Fantasy 7 before installing Windows 7.
You should back up your games before reinstalling Windows 7, as the process may not preserve them automatically.
The file wasn't located in the Steam cloud folder within the user data directory.
Just keep the Save_XX files safe. If Steam Cloud is active, it handles that automatically. For Square-Enix cloud backup, it’s another solution. Manual backups also ensure everything is protected. Any of these options work.
I have stored the files securely, so everything should be fine at the moment.