User Manual
Yamaha Professional Audio QL StageMix V7 User Guide
Page 84
9.9 UNDO RECALL
Pressing the [UNDO RECALL] button will cause the most recent Scene Recall
to be cancelled. StageMix will need to synchronize with the console after
executing a Scene Recall UNDO.
Press the [MIXER] button in the top-right corner of the Scene Memory window
to return to the Mixer window.