Lost my data in just cause 4

I would suggest you open your own thread/post if you are having an issue with your console. Seeing as this one is already a 9 months old.

Hi, you can delete the data from your concole, but only from your console, when you open it again it will ask you if you to use the data which is your console or the data which is the cloud, you will choose cloud.

Hello!

Thank you for posting on the Xbox forums. We recommend clearing the local saved data on the console. This will refresh the saved data to your account. We recommend making sure your console is connected to your internet and Xbox Live before this step is taken.
We will provide steps on how to clear the local saved games. Be sure to let us know the results!

1. Press the Xbox button on the controller
2. Select Settings
3. Select System
4. Select Storage
5. Select Clear local saved games

I would also check to make sure you're on the right account and signed in online.

It depends on how you lost your savegame.

If the save was already synchronized to the cloud in it's "lost" state, then there is nothing you can do to bring it back.

If however the local copy of your save was erased while the console was offline, you can follow the instructions of XBF Leonzo G, and clear the local copy with the empty save.

Then when you start the game again, the console will try to download the last synchronized savegame from the cloud.

If the emptied savegame was not yet uploaded, this will then download your last intact savegame, so do NOT abort the download.