Thanks for the quick response. I guess my confusion revolves around the concept of "setting" a left voice, and whether that concept includes eliminating a left voice that was previously set. In other words, if the keyboard is in a state where a left voice is active, how do I create a registration that will turn off the left voice, and make a new right voice active across all the keys of the keyboard? Am I correct that the only way to do so is to save the new right voice registration with a style (phantom or actual)? To state this another way, I want every registration to definitively eliminate all previous voices (including left voices) and replace those voices with those of the new registration (which may contain only right voices, in which case the prior left voice should be eliminated or turned off). The only way I have found to do this is to record every registration with a style (phantom or actual). Otherwise, as you sagely stated, the prior left voice will not be affected in any way (i.e., either as a change in the voice or as its state of being on or off.)
In any event, you have given me a way to accomplish my goal, for which I will be eternally grateful. I shall, however, remain somewhat frustrated, as I would have thought the ability to easily set voices with registration memories would have been a most basic function not requiring the use of phantom styles. I am sure there is some technical reason why this is not possible, but at a minimum one would think this issue may warrant a sentence or two in the owner's manual. Or, alternatively, perhaps because of my ignorance, I am the only user who desires this functionality. Thanks again for your kind assistance, and I promise I will not bother you again (at least for a reasonable time!).