Make 2d issue

I’m trying to do a section perspective cut and make 2d is not coming out correctly-- I tried it in Rhino 6, WIP, and 5. 6 and WIP come out the same and 5 comes out worse. It seems like Rhino isn’t recognizing the surfaces and polysurfaces and so isn’t making them 2d
Other people working on similar projects are also having issues doing this. I’m using a clipping plane to create the section view.

This is what it should look like…

This is what comes out in 6:

Hello - do you only want the section curves in the output?


I’m looking for the clipping plane intersections and the background curves