Can we please have the ability to change the surfaces in a Volume TIN.
To enable this functionality right now we need to create TINs for base surface and comparison surface, then paste the relevant surfaces into them and then create the volume TIN. To change the surfaces in the tin we need to change the surfaces pasted into the base and comparison TINs. This may be fine for small surfaces, but with larger ones I just end up with additional copies of the surfaces in my drawings which doubles the file size. We have the ability to change the surfaces pasted into another, so why not the ability to change the base and comparison surfaces of a volume TIN? To be honest I'm surprised that this ability wasn't coded in from the very start as it seem quite obvious that users may want to change the surfaces.
