Anderson there is more than enough info on this post to express the exact problem including screenshots, this is a fundamental issue with the workflow of fusion and not something anyone here has done, the lack of post reference options for selecting broken links when making changes to source body is a known issue. in reality, the copy bodies should probably just removed as a tool until this is fixed, such that people don't use it for the purposes of what it pretends to be, a copy of the source body. when really it's actually more of an "export of the source body at that time" with no means of reflecting actual edits made before the body was made, which flys in the face of the whole point of having a history tree.
the true workaround is to use a boundary fill selecting the source body as both the tool and the cell, this has the actual desired effect of what people will naturally presume copy bodies are. I'm certain 10,000 of hours have been wasted by this one oversite and the subsequent lack of fix. i myself lot some 50 hours of work when I later needed to update a selection of projects that featured this issue before I knew it was in fact an issue.
Copy bodies are in reality only useful for the purposes of saving the body at that current time indifferent to edits made to any design history up to that point or for the people who are very, very confident they will never need to make such edits.
the fact that people are still suffering this problem, that is falling into what is essentially a "landmine" programmed in, is really rather telling.
it should either be removed as a tool (given that its functionality is better achieved through boundary fill) or fixed or updated to clearly represent what it actually does.
I'd bet your job this is still like this for yet more years to come, and given the lack of progress on so many fundamental issues you'd be a fool not to as well. what a strange place to work.
