I'm glad this will be useful!

I just finished the most difficult part which was to enable holes in planar faces to come across as clean interior holes in the .SKP model:




So all planar faces in MoI will come through as clean single faces in the SketchUp model. Rather than being made up of a bunch of polygons I mean.

Curved surfaces are converted into a bunch of polygons, but the internal edges are hidden so your wireframe is not cluttered and will look like your surfaces in MoI did with the same kind of boundaries.

- Michael