Hi Rich_Art, thanks for posting the model with the export problem.

Like Danny mentioned above, it seems to be a display glitch, if you go through with the export the actual polygon data seems to be generated ok.

Also since it has the same behavior in the previous v3 beta and in v2 at least it's not any new bug introduced with this new release.

I'll investigate it though and try to figure out what's going wrong.

- Michael