I have the Harmony 650 and added te Marantz 1403 AVR to it, the Marantz remote model is RC018SR.
There are 4 Sound Modes buttons on the original Marantz remote that have dual functions, for instance "Movie Mode". A quick press shows the current sound mode, and a long press / hold brings up a Movie Mode menu from where you can choose from various sound modes like Dolby, Multi channel stereo etc.
The quick press works, but the long press does not. I've used the default button settings from the Marantz 1403 database, then tried learning the IR buttons the standard way from the original remote, then tried learning the IR in Raw and it makes no difference, long press does not bring up the menu for these buttons.
Any ideas of making a dual function buttons with long press work?