Copy Elevations and Areas
You can copy lines and spot elevations to create duplicate lines and spot elevations in another layer.
You can also copy lines from the Takeoff tab to the Area tab to create a new area with the same dimensions as the line. Or, you can copy an area to the Takeoff tab to create a new line with the same dimensions as an area.
You can also copy a series of points along a line to another layer to create an exact copy of just that part of the line in the other layer. This is another way to daylight proposed elevations.