How would I convert a NURBS curve that was drawn (only on x,y coordinates ) basically a 2d flat drawing.. to a polyline? Of course we can convert a nurbs surface to a polygon but for some reason I can not solve the issue when the subject matter is about the curve/line. Maybe it is just a stupid question but I happen not to solve it 
p.s. this topic takes direct reference from the problem I mentioned in the previous post
"importing dxf issue"