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I have been using Fuelio for over a year now and I have never had success syncing data between two Android devices.  I use the Google Drive back up services on both devices.  When I manually back up the data on one device and download the data on the other device nothing happens on the 2nd device and the data is not updated.  I tried the import and export functionality but on the 2nd device it creates and entirely new vehicle instead of updating the existing one.  I have to then delete the previous vehicle to successfully show the updated data.  Does anyone else have this problem with syncing data?  Is there a better way of syncing data?