And the final moses:
I had to open the previous model in 3DsMax, delete everything that was not connected to the beard object, and I found that the beard was merged with the eyes and the chest part of the robe. So I deleted the vertexes that were attached to the beard, as far as I could select them without selecting pieces of beard with it.
Then exported the beard itself to obj, and merged it in PoseRay with the original Poser exported obj (which didn't have the beard). It fit perfectly, and below is the result.
Now for a nice spot to place him, overlooking the parted sea, and I think the project will be finished...