Thanks for the reply.
So my upgrade from my i1 display 2 to i1 display pro loses this feature for some reason... good grief! I assume they could add it to the software in an update if they chose since it already records the data somewhere. Strangely the software actually forces me measure the ambient light to continue even though the auto box is not checked.
I find the newer software to be generally less clear and efficient.
I agree and will pass on the auto feature.