Level Sequences showing up as Black in Master Sequence

I know this isn’t strictly a UE4 Studio post but thought someone may know.

Have created several animated level sequences which are running nicely. When I create a master level sequence and load my individual shots up they are shown as being black. I am not sure if this is a glitch because my scene is dynamic and not baked. Any thoughts on what the issue could be?

The scene was created on 4.21.2

Thanks for any help.