[UE4.13] Unable to Acces Blakboard Values from Decorator

So, I rechecked all keys in my Decorator. They were fine. Just to be sure, I copy pasted key names from the blackboard into the Decorator BP key values. It still wasn’t working. Then, I tried a more explicit approach. Specified which Blackbard to use in the Decorator BP:

Then, I set the key names in the Getters in my Decorator BP accordingly and it’s working. I’m wondering why it’s working with this approach though and not the former one: Is it that the Decorator is unable to recognize whch Blackboard to use if a reference is not made in the code? I made no other changes in my Decorator BP aside from the one above. Thanks.