Never mind...figured it out.  Somehow or someone went around and mucked around with the configuration keys.  ARGH!
. . . and this is why many people recommend 
not having a dedicated "TAB" button 
and disabling the shifted function for it, too.
If you already have a dedicated menu button, you can add a concealed SPST switch inline with the button to disable it when you aren't configuring the system.  SPST shown in "disabled" (open) position.
                      SPST switch     "Menu" button
Encoder _______/ ___________/  ____               Other daisy-chain ground connections
                                                             |                  |                    |
Ground  ________________________|_________|__________|
Scott