reopening a sequence with niagara keyframes

(UE5.3.2) I have a niagara system that I’m syncing up with some audio in sequencer for a music video type thing. I have a couple of user parameters that I’m adding keyframes for to change values at times during the song. This worked perfectly when I first created the sequence and I could see effects in the preview and in the final render. (Imgur: The magic of the Internet)

When I reopened UE the next day to tweak some keyframe timings, the niagara component does not react to my keyframes in the editor or in a render despite me seeing the values change in the sequencer. Same sequence in the same level, same actors, adding auto-activate and life cycle tracks don’t see to be doing the trick nor does using the niagara utility reset button.

If I create a completely new sequence everything works but that means I have to redo everything if I crash or have to close and reopen UE for whatever reason.

Am I just missing a setting somewhere? It seems like it shouldn’t be difficult to make a niagara system pull values from a sequence that it’s already part of