I am building a very complicated tubular structure with a lot of planes and sketches, and to keep the design tree organized I decided to drop subassemblies (my word, not a Solidworks term) into their own folders. As soon as I did that with the first subassembly, its solid bodies disappeared from the screen and from the solid bodies folder. I can't seem to locate them or display them. They existed until I dropped all of the sketches, revolves, extrudes, etc. into the folder.

To make it even weirder, a part that I designed separately and imported and also dropped into this folder shows up in the solid bodies folder and displays just fine.

Refer to the pic. How do I see the stuff in the folder "Seat & Mount"?