AutoCAD Civil 3D :: Cross Section Data Bands

I am creating a data band for Finished Ground. I have created a Top surface from my corridor and have sampled that as well as my original ground. I am trying to add data bands to an existing cross section view. When adding data bands for the cross section, I first go to the Section View Properties, add the data band, in this case, "FG Elevations", In the "Section1" column, I pick the Corridor surface that was sampled.

The data band does not display data. I know the data band works, because I picked the original ground as the "Section1" and it gave me the elevation.

I have noticed that under the "Sections" tab of the Section View Properties, and in the "Type" column, the original ground surface has a different symbol than the corridor surface. I have also noticed that if I have only the "Draw" boxes for the sampled corridor surfaces in the section view checked, nothing is drawn the section view. The corridor surfaces seem like they are not really there. Am I not able to retrieve data band data from a corridor surface?? If this is the case how do I go about making the corridor top surface something I can get data from?