Hi!
So after all things got worked out on what’s shown in this previous post, I now have a new predicament: I cannot split, boolean, trim, etc. the polysurface.
Hi Rene - intersection along the plane hits many of the face edges resulting un-clean curves - overlapping. This is a tough case - it should work but since it does not, I’d explode the object and split all the surfaces at once with the plane.