I built a trade port on the moon of Tercidina and another on the desert world of Echemmon.
When I hover over the credits, my trade route does not include them. See link.
I am gathering a list of possible issues and I'll send them in one shot, after verifying that they haven't already been reported, but I wanted to go ahead and submit this one. Are moons not eligible for trading? If so, there should still be a route that goes from Rhodesia to Echemmon. Let me know if I'm missing something.
Overall I'm very pleased with this installment. When asked if it was a sequel, I said it is technically a standalone expansion, but there is so much expansion that I personally call it a sequel. Awesome game so far. Thanks Ironclad!