Thanks for your response. I start at Stage setting 0-0 (Grand Piano). I then move through the different piano tones using the + and - buttons, while still onstage setting 0-0. After moving through several piano tones, the pedal no longer sustains. If I manually hit "Bank 0-0", the board returns to the Grand Piano stage setting and the pedal now sustains again. If I scroll through the piano tones again, the sustain function again disappears and I have to reset it by going back to bank 0-0 again.
Thanks again for responding.