I have this Alembic file where most packed alembic primitives are static shapes that are only being deformed through transformations… but there are a few packed alembic primitives whose geometry shape does change through time. I need to find a way to detect which packed alembic primitives are deforming vs which ones are simply transformed. How do I do that? Is there an intrinsic attribute that tells you that? I can't seem to find any info on that.

from the quick look it looks like abcanimation intrinsic holds that information
- constant, is probably static
- transform, transforming only
- attribute, deforming
maybe there are others

How did I miss that? Yes… seems like exactly what I'm looking for. Thank you.