I have a rigged and animated flower, exported as alembic. I animate the 'frame' property on all alembic objects, so I have keyframes in my scene for the animation. Now, I clone the flower, set the Animation Mode to 'fixed', and try to trigger the alembic's keyframes with a plain effector + linear field.
This all works, except for the parts in the alembic that have PSR animation (indicated by a white film strip icon in the Objects Manager). Attached is an example scene file (move the linear field, the flowerhead should move up and down, but it only does it when the timeline plays).
I have tried and can reproduce this issue with similar setups every time.
Is it possible to link this? Why do alembicced PSR animations behave differently than deformed meshes?
*EDIT* Added the full alembic file
Flower_Setup.zip