Hi Martin,

> What was surprising here was that the Rhino NURBs imported fine and although the meshed
> surfaces were not displayed they were obviously imported by MoI as the saved file still contained
> the meshed surfaces.

Yes, that's a feature in MoI's 3DM importer - if it finds any Rhino entities that it does not deal with directly itself (like meshes for example), it still reads them and stores them in an internal data table and writes them back out again when you save back to 3DM format.

That's so that data in files can still "round trip" back out of MoI instead of having things purged by opening and then just resaving a Rhino file.

- Michael