You can create a local backup (and they are still saved automatically).
If you are trying to restore from a backup file, please read on:
If you want to replace the data in Fuelly with what is in the backup file, then delete the vehicles in aCar and Sync Now! to remove from Fuelly.
Go to Settings -> Cloud Sync & Local Backup and Sign Out from Fuelly.com
Restore the backup file and connect to Fuelly, if desired.
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