Hi Robert,
Welcome to the InfraWorks forum!
It sounds like you might be dealing with an issue related to surface categorization. If the surface was imported from Civil 3D, please try the following steps:
- When the message about uncategorized surfaces appears, select "YES."
- Open the Surface Layers dialog to categorize the data.
- Enable visibility for any Uncategorized terrain surface layers.
- Move them to the Ground Surface or any suitable category.
Note: This notification is a new feature introduced in Autodesk InfraWorks to help with the import process. It alerts you when surface data is not categorized and provides an option to open the Surface Layers dialog for categorization.
Let me know if this helps or if you have any further questions!