Maintain metadata extracted froma Datasmith after project packaging

Hello everyone,
i’m struggling with the project packaging using the Collab Viewer Template.
I imported a Datasmith model from Archicad extracting Metadata from each mesh for data visualization.
In editor gameplay, functions to get and visualize Metadata work, just after packaged my project and run it, nothing works. For debugging, i printed some validations about Metadata state:

In editor gameplay:

Function BP:

Packaged gameplay:

If enyone got some solutions about it, can be really helpful.
Thanks,
cheers.