Exclusion of buildings in a simple scenery [Resolved]

I tried exclude some buildings in a simple scenery of my home village. I tried using Polygon (Exclude all) and Rectangle (Remove Buildings), they work to some degree, but some buildings just won’t go away. One thing I noticed though, when I check/uncheck exclude option, those buildings don’t redraw, but they’re certain in 3D as I could see them in 3D when moving around.

Any hint would be very much appreciated! Thanks.

Never mind, some 3rd party scenery like 50 miles away is putting buildings in my village for some reason.