Best way to fill in the holes?

 From:  -ash-
2347.26 In reply to 2347.25 
Okay a quick search on the Lux forums comes up with the following:

"The importer can handle only mesh, camera and light. So, you need to translate nurbs in rhino to mesh, which can lead to huge amount of polygons, as well as patches with gaps (rhino is not really good in translating nurbs). Meshs from Nurbs are triangulated, so it get's hard to work on the geometries later in Modo."

So, it looks like the answer is no. One way mesh only.