Create Terrain Model from Design Meshes?

Question

Trying to use the "Create Terrain Model from Design Meshes" tool. 
 Works great. But it creates a terrain from all the components in and referenced in the dgn. There seems to be no way to turn off a component from being included in the terrain. Level displays ( view display, global display and global freeze) don't work , clipping a reference or turning off a reference don't work. I just want to exclude one or two components. For example a wall or barrier component with a vertical face. Or a temporary component I made for targeting or quanitites. 
 Please advise. The tools seems like a easy way to create a terrain, just need some type of controls so it doesn't select every component mesh referenced into the dgn. 
 
 Corridor 
 
 Terrain created with this tool. North corridor is referenced to dgn, but the display is off.

Shawn Cooke · Answer

Assuming you're trying to generate a top proposed surface, give the desired points of your templates an "Alternate Surface" in each of those template point properties dialogs that span along that top edge. Use the "Create Corridor Alternate Surfaces" to extract. That will stitch together any points using the same name given in that Point Properties Alternate Surface field.

Shawn Cooke · Answer

Zane, You're preaching to the choir. I'm just here to offer a possible best solution "answer" available based on information given by the user. Sorry to assume you haven't tried other methods/ tools. I hate the fact there isn't an easy way to get to the results you mention. Now that you've clarified your project constraints a little more, the only viable solution is to make a breaklines file out of the desired 3D features. I've used FF= (Fence File) to create a 3D file from those lines (simply turn off components and any features you don't need from the Project Explorer, Civil Standards tab. I'm sure you already know that, but placing it here as another "answer" for others who may stumble upon this forum entry.

Create Terrain Model from Design Meshes?

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