Doors can only be accessed in the library by using the "door" tool.
Windows with the "window" tool.
Sounds like you are using the "object" tool which will allow you to see the table you downloaded but not the doors or windows.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11