I’m in a pretty bad pickle. We are still studying the design on a site using the existing topo. Rather than modeling everything flat and then sloping down specific portions, I chose to model the existing topo and drape linework over it using the sandbox tool because the design has gone many iterations and I have been bringing linework in and draping over to see how the hardscape will interact with the existing topo. I plan to make a “real” model soon but I just need this to hold out for one last iteration.
The problem: I have had to do so many iterations that the base is getting difficult to work with because I keep having to stitch the topo back into place using the sandbox too;. I need to make this pathway intersect with the bottom plane because there is an intersecting face that I am trying to cut out. I will bring this in lumion and the yellow part will be a tall grass, so this will be cutting through this pathway if it is not removed underneath. No matter whether I drape the linework on the yellow surface, or intersect an extruded form of the sloping pathway I am making with it, it will not separate the surface for me to delete the shape underneath. Is there another way to quickly do this?