Selecting Contour in Openroads Terrain to Create "From Elements" Terrain Model

I am struggling with finding any information on being able to select one or multiple contour's from a Openroads Terrain (tried both 2D and 3D) Model to create a new terrain or a boundary based on the contours from within a ORD terrain.

It was noted in a forum post that this could be accomplished by executing the Terrain-> Analysis -> Analyze Point command, select the terrain model, and then the contour, to get a contour to display as a geometric feature (polyline, Openroads geometry, whatever) but I have not had any luck in getting a contour to render as a selectable line using this command. I have only been able to get triangles to display using this tool. 

I am attempting to extract existing retention basins from a large OG Terrain Model.

Thank you for your help! It is very much appreciated.