Thanks, that's what I suspected. However, it doesn't explain Atlantis disappearing from the Trade Advisor screen entirely. I expected to see it in the Can't Trade set, with advice that I needed a coast route to Atlantis.Originally posted by LKendter
I believe barbs DO blockade trade routes. I avoided a lot of early trading for the fear of this happening.
I watched Atlantis go off and on the possible trade partner screen multiple times.