Hi @awswolf,
I have experienced the same bug, I mentioned it here:
Dataset used in another dataset - Keys not recognized
You can also find a link to another previous discussion on the subject (and if you google you will also find messages on StackOverflow).
I also contacted the QS team in email and I got a reply that they would come back to me, but they never did.
I am not aware of any public QS backlog to know what they are working on, so no idea if this is sorted out.