HOUDINI - HDAs containing nested assets
In order to use HDAs with assets inside add a spare file parameter to the HDA at the top (unlocked) level. By doing so, the GridMarkets Render_Submit ROP can detect the cache files from within the package and add them to the upload queue.
Ensure the inner HDA has a file parameter linked to the dependency assets. Then, reference that to the top parent of HDA's own file path.
You can find an official SideFX tutorial about creating spare parameters in HDAs
HERE.