Preventing Song Loss due to Undo
All audio in the current song can be lost if the UNDO feature is used immediately after a SONG OPTIMIZE function. Use the following procedure to recover the material before it is permanently removed:
1. If UNDO is performed immidiately after a Song Optimize, all recorded audio will appear to be eliminated - optimization erases the VS's undo buffer, so it temporarily returns the song to a blank state. Hold SHIFT and press UNDO. "REDO Last UNDO?" will be displayed.
2. Press YES. The audio of the song should reappear.