How do I get Revit metadata to Twinmotion with loadable families?

Hi!

Revit contains a lot of metadata, called Building Information, and I'd like to be able to read this data with Twinmotion. Using the Export Settings within Revit I'm able to make Datasmith include metadata for System Families, but not for Loadable Families. Is there anything I need to do to be able to transfer data from loadable families? (The bulk of families are Loadable in a standard Revit project.)

I've tried using system parameters, project parameters, family parameters and shared parameters. I'm using Revit 2023 with both Twinmotion 2022.2.3 and Twinmotion 2023.1.

Thank you kindly for any suggestions,

Ruud