Hi,

(1) I created a hierarchy in Maya and then exported it to '.abc' format. The file cache contains empty groups/transform nodes with channel animation, as well as hidden transform nodes with animated child nodes.
(2) In Houdini, using Sop nodes, my goal is to import the alembic file, apply deformations to the geometry, and then export the results without making any changes to the asset model hierarchy. After trying out various methods and running multiple tests, I have only found one method to transfer visibility, which involves adding the "i@group__3d_hidden_primitives" parameter to all prims. However, this parameter only works on Shape nodes, and all transform/xform nodes change their visibility value to 'on/True' after export using ROP Alembic Output.
(3) I found out that when using the Alembic Archive node, I can achieve a similar result, but it adds some extra parent nodes to the hierarchy.
(4) I'm unsure how to export the cache with the correct hierarchy through the "File -> Export -> Alembic" menu. Is it possible to use a Python script to automate this export method?

Any suggestions regarding my approach?