Exporting Rhino curves to Autocad

When exporting a faired Rhino curve to Autocad, I get, whatever I do, a line that is build up out of strait segments while it still is one line.
What am I doing wrong?

Which AutoCAD export scheme are you using?

Hallo Wim,
I export the lines with “export selected” as a dwg or dxf file.
In the options, I have choosen several export schemes for 2004, en for curves I tried all kinds of variations for the lines, arcs, polylines etc.
I opened the files with Auto-Cad and also with Draftsight, but whatever I do, I get a line build up of straight segments.

Have you used “Regen” command? It refers to Regeneration…

Very stupid, but that solves the problem.