If you have connected your Pro Backup to your Google, you have the option to sync your files to Google Drive. To enable this go to Settings > Google Drive and switch on the toggle next to Sync files to Google Drive.
By default we do not enable this option as this can consume a lot of storage of your Google Drive. We therefore recommend verifying that you have enough storage available in your Google Drive before activating this option.
Once you have enabled this option, it take up to a few days before all files are synced.