I think i have the same problem
when i change a preset, it perfectly recalls the preset-values of all knobs on the ipad, but the synth does not go along / change its sound. midimonitor tells me that when i recall a preset, only a single control is transmitted (control 104).
To transmit the data for all knobs i have to touch and slightly adjust each knob on the ipad, so the values are transmitted. very inconvenient...
i guess thats the same problem we are talking about here?
i use
IPAD2,
MDPro2 2.5.2 build 170103,
JX-3P KiwiTechnics layout by Rainer Keizer