Duplicate section edge

In this image. See the blue lines. They are not surface/polysrf edges. They are section edges. I need them to continue drawing whatever I’m drawing “in section”. But I can’t click them and do “DupEdge” because this is generated section geometery …

So a feature request - make this possible. It should actually be possible for all such tools … treating the generated section lines/surface as “existing geometry” … Then this becomes super powerful.

Thanks
/Erik