Folks,
I tried another approach that worked and emulated the pre-2013 functionality regarding Shapes with Data Graphics.
In my case the requirement is that all data entry on a Shape, with user properties, must be populated via the properties Dialog.
So any time you Dbl Click on the shape, even a Data Graphic element, the Shape properties dialog must be presented to the user.
So I did achieve this capability by setting the "Protection" characteristic "From Selection" and then turning on "Document Protection" from the Drawing Explorer.
I have documented this approach in the attachment.
Thanks for the ideas which drove me to think OOTB.
I have learned a lot from this group since 2013.
Many Thanks
Scott