Jim,
First place I'd look would be in Controllers. Be sure that your scenes are set to none, not last, nor the 3rd option. With this in mind, what this will do is provide a blank canvas on which the scenes will work. If you've got other presets with scenes that require something other than setting the scenes to none, you can do so with each preset, IIRC.
Someone else will need to verify whether Controllers is global or per-preset. (We may learn that controllers for scenes is global, which may mess up other presets which require toggling to most previous scenes, channels, etc.)
Once you've learned this, when set to none, the scenes will stay the same instead of performing the operation designated by each scene controller. Without sounding tacky, my 2¢ is all I can offer at this time.