I probably should delete this since no one responded, but just in case someone else has the same question… GetName() worked fine as a consistent unique ID in the packaged game as did the GetObjectName(). I did a packaging and displayed the values from these and they were functional and as consistent in the packaged game as they were in the editor and thus I was able to use them as a key in save files to reference back to the live object in the world/level. The GetUniqueID() still exhibited the same behavior in the packaged game of being unique to the specific level load, but not always unique between two different loads.
This seems to suggest that an answer provided in the answers application, where the individual said you could not trust GetName() in a packaged game, possibly either a problem with an earlier version of the engine, or was just wrong. Of course a third option is that it works on the Mac and not on Windows, but that is VERY highly unlikely since Unreal normally works worse on the Mac. I’ve not tested it on our Windows box.