Oh bloody hell! I have finally figured this out. It was at the EISY end.
For the record, I tried everything that seemed to make sense. I "healed" the network. I did the factory reset on the GE devices. Nothing.
Finally, I looked at the Synchronize options. I have no idea what that means or does. For the hell of it, I selected New & Deleted with Interview. No idea. I then went and selected the option to remove devices and hit the buttons on the second controller. I did it again and hit the buttons on the third controller.
I then attempted to add a new Z-Wave device and viola, the second controller added. I then added the third controller.
What a pain and I still don't know what the syncrhronize stuff is or if that had anything to do with the solution. I should also point out that the first controller, the one that added just fine in the beginning, was a new one, right out of the box. The second and third were ones from the previous house. I don't know if that had anything to do with this, especially since I did a factory reset on them, several times.
Anyway, I am back in business, until I hit another wall down the line.