The "Mageia Edition" of VirtualBox seems to be special in that it allows "Mageia as the "Version" of Type "Linux" of a Virtual Maschine on the basic settings.
Could it be that this results in naming the "VBox OS Type" as Mageia when doing an export? I did create a Virtualbox with Mageia 32 bit under Mageia 64 bit. I did choose "Version" as Mageia during creation. I did export. But it could not be imported due to an error (please check https://www.virtualbox.org/ticket/12657).
Maybe the maintainer wants to look at this.
Thanks for the great work!!!
Wolf