From su to layout then to dwg file

I have a SketchUp model, and it sends to layout with API, the layout document will export as a dwg file. When opening the dwg file in AutoCAD, all lines breaked into pieces, and curves are composed of lines, not the natural curve in CAD. Is it possible to export dwg with whole lines and natural curves?

Thanks for this information, but this is not what I want. Thanks anyway.

I don’t know a way to export the way you want from layout, and if I’m not wrong I think there’s no way to do it, you can do it from sketchup but not from layout.