Hi Mr. Yuri, I'd probably recommend exporting to .obj format which will generate a mesh. Then you can bring that mesh back into MoI as a set of line segments using the converter here: http://moi3d.com/resources#Obj23dmWireframe_converter . Or you can also bring it in as surfaces using Max's script from http://moi.maxsm.net/media/files/ , find the ImportObj one.

If you want to generate a 2D DXF file with hidden lines removed like the one you show seems to be, use Max's one for that.

The Wireframe mode that you mention above is a viewport display thing, it would not have any effect on DXF output.

- Michael

Thanks Brian, I learned something new about scripts.
And thanks Michael.

Seems it's working fine by using Max scripts.

Awesome somebody took the time to make all the extensions for the community.