The save all didn't work. I am not surprised with this assembly. It has given me all kinds of fits since it's inseption.
I understand what you are saying and I like your idea about the visbility route, but since I cannot edit the BOM I am stuck continuing down the path I am on. Unfortunately!!! I would have originally done this except for what I have stated about my issues with this file.
So I am going to guess that linking the BOM's is not possible.