(2020-01-23, 16:58)Philippe Hurbain Wrote: What I would do would be to create intersection vertices between the edge lines around blue surfaces and green line (slanted x icon in toolbar) and rebuild things from there.
I would turn the green line into a surface and use Isecalc to get all the intersecting vertices, as edge lines, in one go.
Much faster than selecting two edgelines, to get one vertex, and then selecting another set of edgelines to get a second vertex, and so on...
Add new surfaces. Remove old surfaces and then maybe the edgelines, if you dont want to keep them as new edgelines, around the blue surface.