HCDLLC

I am in the process of using the "Elevation Region" Tool to change the elevation of a region within my Terrain Perimeter. I have both the top down/floor plan view up and a Full camera view up. I notice that once I have entered in a new elevation for the terrain, nothing changes automatically in the Full camera View. But if I "Clear" the Terrain and then go back in and select "Build Terrain", then My changes are reflected in the Full camera view. Is there a setting that I need to select to make sure the the elevation changes that I make take affect immediately , in real time?

I notice that 3D Warehouse seems to have less and less symbols that work with Home Designer Pro 2014, now that Pro 2016 has come out. Is everyone still using Sketchup's 3D WArehouse to get 3D symbols or are there other websites that I can get 3D symbols from? Please help. Thanks!