[IR Ss4/10] Assign Feature Definition to Terrain Model create in Descartes

I have a source for LAZ files from another agency, but even if we use the tools to extract the LAZ to LAS, the version is not compatible with our SELECTseries products. And since it is another agency, I cannot dictate which LAZ version tomake available.

So one of our GIS savvy users is able to take the LAZ, and eventually get a terrain model via Descartes and an STM. However, it is apparently not a Civil Terrain Model in that it has no Feature Properties. How can I assign Feature Properties to a MicroStation Terrain Model?