allegedly fully compatible Denon DJ MC7000 sort key/artist/title function not working.

Sort function on Denon DJ MC7000 not working on Day Pro and Djay Pro 2 MAC OS. It is listed as fully compatible on
Steps to reproduce after hooking up recognized controller: 1. select local music library (iTunes) 2. Use select/load knob to verify library access. hold down sort down arrow button and one of the following. Title, Artist or Key. The list does nothing. I expected it to sort by the corresponding function.