Sorry the topic 's owner.
You can try Export DXF from my extension here (a paid plugin but has free trial in 30 days). It will feed your need with:
- 2D export
- Included layers with ACI Color and line types.
- Preserve SketchUp model 's origin
- Maintain SketchUp user 's unit
- Included hatches polyline for section if using Curic Section.