When moving a member variable from a child class to the parent, then deleting the child class, blueprints that reference the member variable will fail to compile until the node is removed and re-added.
Attaching project from Licensee that shows end result.
Result: Reopen the editor and the blueprint now fails to compile
Expected: Blueprint compiles successfully
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-55113 in the post.