Did you "Save" after you selected None in the proper areas? Sometimes it's easy to just click on the "X" after you have made your selection.

Also, make sure you have selected the proper "Punch To..." on the left side.

If worse comes to worse, select "Clear All" and redo your punch-throughs.

Also, the MX-3000 is a Complete Control Series remote from URC, so you're going to have a better chance of getting a reply in the Complete Control Series by URC forum.