Sims 4 Save File Missing

@saminicolesc Are you sure those saves have been saved locally before ? Did they exist on your local drive or just in the game ? Like did you check the file system if they were present ?

Did you just turn off syncing or the usage of oneDrive entirely ?

I'm thinking more the game used the files on oneDrive and not the local ones. So basically those august files were on oneDrive only (not locally). There's no syncing needed for the game to use the files on one Drive as far as I'm aware.

When you then sync the drives, you've overwritten the oneDrive files with your local ones instead of the other way round.

The game does seem to like to switch between oneDrive and the local drive on patches so I'm guessing this is the scenario what happened:

1. The game used the local drive up to June, creating those files.
2. In July/August, the game used oneDrive to save the progress
3. When you now played again, it switched back to local, showing you only the June ones. Playing around then created those new files from 2021
4. At this point you synced and oneDrive assumed your local drive was newer and has overwritten the content it had with the local files cause very likely they had the same names as the old ones you played with.

Long story short: I don't think there's a way to recover your July/August saves unless you find them somewhere on your local drive or onedrive (which I don't think is likely since you already searched).