Success! I checked the Rev2, and all the settings were correct. So instead of trying directly again with the '08, I first dumped the banks into the Tetra... and then dumped them from the Tetra into the Rev2. That worked immediately with no issues. So, I don't know what wrong before... and I'm not curious enough to try it again from the '08.
As advertised, I think the Prophet '08 patches sound identical in Rev2. Well done DSI.