Non comme dit dans mon post précédent ce n'est pas volontaire, c'est un bug connu des singes.
Vu sur leur site:
"''Hey Racers,
We have identified an issue after updating to Version 4.0 where the Cloud Save system may locate a save from a previous version of the game for you to restore.
The Team are currently investigating this issue. In the meantime, if you have made progress in your game after updating to 4.0, please refrain from restoring any save data, as it may result in data loss. This includes those who are transferring saves between devices.
Please note that the backup to Cloud functionality is still uploading correctly - this issue only affects the restore functionality.''"