Thank you very much, Harry, for the ticket.
I'm not running the Site Issue forum, and I have no access to customer data. We take privacy here pretty seriously, way above what the law asks us to do. I wouldn't want to have access even.
So, I do not check here often in the Site issue forum.
The simple answer is that generators, like the SDD, generate new Geometry, and that doesn't include any MoGraph ID.
An alternative could be: (color or ID, both works.)
CV4_2025_drs_25_RSci_01.c4d
Enjoy your weekend