Thanks Jerry.. But i want ask about if i need to cancel any relation between the cropped surface and the original surface "" usually i use data shortcut then use promote "" is there any command to do it in this case ..
No matter what crop out of a surface the surface data for high and low elevations stays the same. Even if I crop out my highpoint the high point of the surface stays the same. It still reads the ghost data. It does not "Crop" the surface, it seems it meerly just does not display it.
