Thank you for these updates!
I do hope this gets some priority as when you have a large UE4 C++ project, working in smaller projects is vital to avoid very long compile times. But when I am ready to merge the smaller test project with my main project, I run into this issue I am describing.
So I consider this issue vital to be addressed for anyone who is doing a very substantial UE4 C++ project, which is going to be more and more people as time goes on 
Thanks!
