Hi Lorrie,
If you have a Sustain pedal (e.g. FC5, FC4A) connected to your T4, please make sure that you do not press the pedal while the T4 is being switched on. Otherwise the pedal will work "in reverse" (not pressed = sustain, pressed = normal / no sustain).
By the way: The On/Off status of the Panel Sustain button can only be saved in Registrations. Styles/OTS cannot change the status of this button.
Best regards,
Chris