Create a merged surface from two surfaces with a choosing of keeping the high or low breaklines on the intersecting area.
You are able to create a surface that would represent a site model for machine guidance (cut when keeping the low breaklines, fill when keeping the high ones)
The merged surface would include extra breaklines that represent zero-contours representing the intersection of surface slopes eg daylighting. Additionaly one can select multiple surfaces in order to merge in one just like creating a site.
I created a little tool as a proof of concept, that does the job, but it would be nice having this as a standard functionality.
