Allegro brd import

I searched in the support forum and the answer I found was that Upverter supports importing of Allgero brd file. However, when I try to create a project and import the brd file, I received a message saying “Unimportable files are selected.”

The brd file is created in Allegro 15.x, and I can use Allegro 16.6 viewer to open it.