Hi Ross
thanks for he answer.
Yes i could just have dublicated the first track, and it would keep the Surface position. But i had already tracked the other layers and they were already perfect, so just wanted a way to move the surface to the other tracking layers with the same coordinates.
I did it manually by zoming in and lining the surface edge up to the viewer edge, switching between the layers and dragging the surface edge of that layer to the same location. Didn't take long, but a bit surprised that there wasnt a more exact way to do it. :-)
Then consider this a feature request from me for the next version, exposing surface coordinates values in the UI ;-)
Robert