I'm trying out the Convert Silhouette Entities option that was new in SW 2020. While using a plane in the assembly, I can select an assembly that has sub-assemblies in it, and the silhouette edges are all selected.  However, if I activate a part and try to do the same thing, I get an error saying Unable to Convert Silhouette Edges. If I pick each individual part in the assembly while in the edited part, it works.  Is this a bug in SW 2020?