Yeah I can see in the examples with the swinging door how that would be important. I’ve also found a way to reference a matinee in a BP through a variable: https://answers.unrealengine.com/questions/9122/is-it-possible-add-a-matinee-to-a-saved-blueprint.html
I believe this is technically a bug… please don’t remove it though! 
It’s exactly what I need!!!
Thanks again!
James.