Are assembly constraints exported to omniverse and where to find them exactly?

I’m testing this connector at the request of enginneers that would like to use cad models for vr experiences. So far it exports the model itself correctly but i dont know cad models enough to make sure the assembly constraints such as limiting rotation and such are present in the data that i get in omniverse. Where could i look for it ? If not natively is it possible to customise the export process to include these in the usd metadata?