Maybe all components are virtual and therefore no components are referenced?
Version? License? Read-only?
There are 5 top level, non-virtual sub assemblies in this file. I am using SW2015 SP5
Does a Pack and Go work instead of Save As? It should include the components.
I still have no idea what is causing your UI issue.
Mine has done this on one drawing file, also.
Can't figure out why.
My guess would be it opened up as a "Read Only" file - or someone else opened the file from another computer now when you try to save then the references would be grayed out because of the read only status...
I am using SW2017, and have a file that this has happened to. Both the drawing, and the assembly have the issue. Can't figure out why.
Tried the "save as copy" options?
Retrieving data ...