I know I've asked this question before, but I still don't understand what SW is trying to tell me. I opened an assembly, then opened a part in the assembly. I modified the part, and saved it with "V2" appended to it. I went back to the assembly, and in the featre tree that part is "V2". When I tried to save the assembly as V2 I got this message:

I tried opening the references as SW said to do, and I changed the assembly to V2, but I still got the message. Do I really have to open up the references in the Save As dialog? what exactly is SW trying to tell me? I'm pretty sure my original version of SW2011 just updated everything with no problem, but I've been messing with this in SW1012-2014.