<->In order to allow my AutoCad file to work with another program, I must convert my AEC objects to 3D solids. When I select the objects such as windows or doors in a wall, and the wall itself, to be converted, AutoCad asked if I would like the selected objects to be erased, I say yes, and some objects disappear!
Also, when i try to do this same operation with some plumbing fixtures from the Design Tool Catalog, they too disappear!
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