ahh... now i see that you can produce a boundary as region using the "edit hatch" command - then you will get one object with holes that gets imported as one group in sketchup.
A 2d DWG/DXF puts all SKP entities [lines etc] onto Layer 0.
Arc/Circles are made from lines.
A 3d DWG/DXF uses the Layers that the SKP entities have: so the export does keep the same layering
Hi David, hi folks.
Using Help Menu --> Help Centerand typing Section Planein the search box gives me a few results, one of which is:
http://support.google.com/sketchup/bin/answer.py?hl=en&answer=94995
Just ideas.