Learn: hover a knob, click L, then move a controller knob or fader. ⚙ sets its range. Mappings follow the parameter (e.g. “A volume”), whatever voice is selected. They're kept in this browser.
The SY22 can't take single-parameter changes, so every edit sends the whole voice (592 bytes, about 0.2 s of MIDI) to its edit buffer. Stay in VOICE play mode on the SY22, not EDIT, while editing live.
The dump-pair method: change one thing on the SY22, dump again, open the new file here. Every byte that differs is listed.
Bold = changed since the dump was loaded.