Changing event type removes usages throughout file

I created a click event I'm using for the UI in my game on several buttons. I just got the sound from my sound guy. After I change the event type to Audio and set the sound effect, all instances in the listeners remove the reference to the event. I have to go back through and re-assign all the usages in the file.

Not sure if this is a bug or intended behavior but there isn't a reason I should have to re-assign the event if I change the type since it still behaves in the same way if it's General or Audio.