Hi, all. I'm on the second mission in Conquest of the Underworld, and when I came across the first enemy city, I found I could trade troops with him, and access his city and make improvements. Is this intentional? If not, is there a way to fix it? (It kinda seems like it was set that way in the scenario builder during development and not set back to enemy status.)

Thanks!

EDIT: After completing the scenario, it is still unknown what the purpose was of the allied enemy, but it seemed to have no effect on the rest of the game.