Oh, I think I found the source of my problem. Interchange is breaking the animation into 4 different animations and renaming them on import, despite the animations importing and working like they should when dragged into Maya. I’m unsure how Pose Driver Connect imports its animations, but I assume it’s using Interchange as this is how it’s naming the animations on import…
Is Epic aware how awful Interchange has been in 5.5? They claimed to have fixed animation import errors with 5.5.3, yet they’re still here.