To Edit Contours

Select the contour graphically or by using an AutoCAD command, such as PEDIT or PROPERTIES.
Perform the edit to the contour. You can insert, move, and delete contour vertices, as well as redefine the elevation at a selected vertex.
If the contour and surface definition become out-of-date, a is displayed next to its node in the Prospector tree.
Rebuild the surface to update the contour definition by right-clicking the surface in the Prospector tree and clicking Rebuild.
Tip: You can update the surface automatically by turning on Rebuild - Automatic. For more information, see To Rebuild a Surface Automatically.