Set scene memory switch ON can reveal leftover garbage.

Another 'gotcha' that can happen with scenes is when users alter presets.

Sound designers often configure functionality, including scenes, that they then want to abandon when they deliver the preset to Yamaha.

So they do things like turn element switches OFF for elements that they actually configure. Then if a user turns the element switch to ON they inherit all of the settings the designer had made so the user doesn't get a clean element.

Same thing with scene memory switches. The memory switches are at the performance common level but the actual part parameters that are memorized are at the part level.

A sound designer can configure one or more scenes by turning ON memory switches and saving part data (e.g. keyboard ON/OFF switch) to the scene. Then they decide not to use that scene in the preset after all so they just turn the memory switch OFF.

The problem is the same: the performance level switch is OFF but the part information for that scene is still configured. So if a user edits a preset and turns the performance level scene switch to ON all of that 'abandoned' part scene configuration comes into play.

Whenever you turn a memory switch ON you have to check EVERYTHING (every parameter) that switch controls to make sure the parameter has the value you want.