Dr. JG

I have a big site model, and when I place a building on it, I need to cut and fill. I have used grade limits and an open pad site modifiers - but they aren't working. the section viewports (cutting through the building) show earth contours still. I've tried flicking from 'existing' to 'proposed' and back again. Recalculating, etc. Nothing works. in on VW2017. What Can I try next?