@TripleB Did you try using class redirects for that? This would possibly solve your issue. Redirect class from project A to B, this could work even if you’d already renamed classes in project B 
https://docs.unrealengine.com/en-US/…cts/index.html
Solving it automagically and 100% table could be simply impossible or very time-consuming for engineer - I doubt an editor of project A can magically change things in the source code of the project B. Even if I’m wrong, coding this might be pointless if core redirectors simply work in this case.
That would be great in any case. Although if given blueprint already tried to load and lost its generated class, data might be already lost. Seems very tricky, but perhaps doable?
Still, request most probably got ignored since it’s easy and quick to fix with core redirects…