And you are not even sure with tis plugin to export Rhino--> Moi if it's polygons and 3DM! ;)
As 3Dm can support polygons and nurbs but Moi at this day support only nurbs!
You can only import inside MOI "structure of a polygons not a surface!

see Obj23dmWireframe converter (bottom page)
http://moi3d.com/resources