When I open Large Assembly or Large Assembly drawing in lightweight mode, there're always some parts can not be found itsreference, that mean there will be a dialogue box ask you to findthe missing parts, but when I open those assembly or drawing filein normal mode, all the reference parts can be found withoutproblem. Is it a known issue?

Note: 1.All parts stored in local, no PDMWorks used.
2. I had tried Ctrl+Q before save assembly, but reference stillmissing when next time open in lightweight mode.

Any advice will be very appreciated.
SolidworksAssemblies