Asseembly help needed

I am working in an assembly.  I did a pack-and-go and saved the assembly for a new "revision".  The files are in a different location yet parts changed in either assembly, even after renaming and and deleting all external references.   Do I need to rename all the parts?

I had an assembly that I renamed yet individual parts (not renamed) still get changed

SolidworksAssemblies