I had a Pixel C, which I backuped (System -> Backup -> ...). I can see that backup (1) in Google Drive. After the Pixel C died I now have a new Pixel C and would like to restore that Backup (1). When setting up the device, it gave me no option to restore from the previous Backup (1). So I enabled backing up the new device and now have a second Backup (2) in Google Drive.
Now my question is - how do I restore the previous Backup (1)?