Thanks for the suggestion, but I still must not be doing it right. In Calculated Value I set the function as:
Proper ( MAIL.ADDR )
and tried with and without the "Do not replace existing value..." option to no avail. It still exports all upper case. I must be missing something obvious I've overlooked...
Well you would still have to perform an action for the auto-enter to work. So try doing a replace field contents on the MAIL.ADDR field to a value of itself.
or Replace Field Contents [ MAIL.ADDR; Proper ( MAIL.ADDR ) ]