Drainage Utilities fra SUE not visable when referanced in DWG

Hi

We have a customer working with Autodesk Civil 3D. In our project (OpenRoads Connect 2021 Realese 2) we have some drainage, both pipes and inlets.

When our customer reference our dgn modelfiles into his Civil3D just pipes becomes visable, all inlets not.

I have tested my self in Civil 3D ( with opject enabler) and can confirm that all inlets dont´t show up.

Any solution?

regards

Sigfús