Inner boundary model clipping

[Kjellis85]

I see in the changelog for 1.4.3 build 6529* that it says "Added boundary clipping for model export.". I only get this to work as outer boundary clipping. Is it only possible to have an outer boundary, or is it a bug that makes inner boundary not work? If I use only Inner boundary, it exports the model as if it is outer boundary.

*I am running 1.4.4 (6848)