Sync with Cloud saving

Hello Julian S! I'm Kris and I'd be happy to help you with your question.

If you have overwritten the console save and that has sync to the cloud, then then the other save is lost. If the save in the cloud is one you want back as not synced, you can try deleting local save and let it sync from the cloud.

You have to be online to sync data with the cloud. Your local save is always saved to your console. If you don't sync to the internet when you haven't in a while, if you somehow lose your saved data you can not sync it back, but you rather get the last synced
data sent to the cloud.

For more info see here:
https://support.xbox.com/games/game-setup/cloud-game-saves-faq

The OP isn't trying to sync to the cloud as they have already done that. their question is whether the Cloud Save can become corrupted and so corrupts the console when the save syncs to it

The Xbox One automatically saves games to the cloud while you are connected to the internet. Game progress will be saved in the cloud storage of the account currently logged in.

You can read here for more questions about cloud saves, or error troubleshooting:

-
Cloud Save FAQ

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Cloud Save Sync Errors

If the information was deleted from the cloud or the auto save feature replaced the saves which then synced to the cloud the information is then gone.