CivilConnection2020: Alignment.GetCurves cannot extract Transition arch/ Clothoids from Civil3D?


I try to extract alignments and axis information of a track alignment from Civil 3D. For this I use the CivilConnection2020 package from Paolo Serra.

I would like to process the geometry and alignment information in Dynamo to create a stationing grid in Revit.
Unfortunately only radii are extracted (see picture) and no transition arches / clothoids. Is there a way to extract the entire axis?

Thanks you.
Best wishes