OS 14.x does not recognise backup from VBOX VM

Installed using the latest 14.x image on GMKtac. The OS boot up is ok. However, will not accept the backup from the version I have installed on a VM in VBox. It does not recognize the format of the backup.

Tried uploading the backup using the UI too, does not recognize the format.

It is encrypted, but does not prompt me for the key, just does not recognize the format.