Apple Logic Pro X - Manual (Page 862)

Chapter 25 Preferences, project settings, and key commands 862
Reset Messages preferences
MIDI Reset Messages are only available when Additional MIDI Options is selected in
Advanced preferences.
MIDI Reset Messages preferences are included for compatibility with older MIDI hardware.
All selected checkboxes will send a reset message, for the selected controller type, to all MIDI
outputs. This reset message is sent on cycle jumps and when playback begins. However, Logic
Pro handles MIDI reset messages automatically and intelligently, so you should generally make
sure that all of these options are unselected—which they are, by default.