SS4 OpenRoads Sync Surface Template Prompt

Does anyone know why I get the following prompt when I use the Sync Surface Template tool?  I am in my mainline corridor dgn and have my ramp corridor referenced.  I then copied horizontal and vertical the lines from the respective corridor and created a tin (gore area).  I applied a surface template but I can't seem to sync the surface template if I were to change something in the surface template.

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