Anyone seen this before?
My parking plan is symetrical, so I drew the upper half, expecting to mirror it. As is usual, topo is never symmetrical. So when I mirrored the upper half and checked a 3D view, the parking was under the topo surface. So I removed the spaces and added one in the lower half and arrayed it 29 times. Revit took an unusually long time, but entered them correctly. A 3D view confirmed they were on the surface. Revit apparently does a huge computation to place the parking on the topo surface, which it does not do for the mirror.