What is needed is a way to permanently crop a cloud based surface and get rid of the cloud data that is not needed. I managed a go-around but it easily took at least 10 steps to accomplish. Why?
My go-around method was, I cropped the cloud based surface, put that cropped surface in a separate open drawing, used "copy with base point" command, copied and pasted the cropped surface back into my source drawing using the "paste to original coordinates" command. If this command is not used, for example just pasting the surface into the source drawing anywhere, the cropped surface elevations are changed. I then erased the original overall cloud surface. This gave me the cropped surface I wanted and significantly reduced the file size. So I got the desired result, but look at all the steps to do something that should be much much simpler.
TT