I have two vehicles set in Fuelio - default and one called 'Jeep'.
When performing a backup to Dropbox, the file vehicle-2-sync.cvs is created.
Now factory reset your phone, reinstall Fuelio and the pro key.
Select the Dropbox Backup/Download from Dropbox. The vehicle name will now be 'Vehicle 2' rather than 'Jeep'. The backup should retain whatever you name your vehicle and comments. I have to go in and change the name manually and add the comments again. I was hoping to use the comments to hold VIN and license plate but can't rely on retaining it in the backup.
Customer support service by UserEcho