3D elements will be converted to lots of line segments. So an elevation or section of a round shape will have segments, there is nothing to be done about this: the shape is made up of polygons in 3D.
2D drafted circles should export fine, I would say, but you won't see many of these.
You could ask for a DWG export instead to maybe end up with polylines.
Erwin Edel, Project Lead, Leloup Architecten
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