I noticed this as well...for some reason, my trade route stopped at 4 planets due to a dead asteroid...even though even though I have lost more planets beyond the dead asteroid that all of trade stations. I was under the impression that the "white line" would follow the longest chain of un-blocked planets. It would seem that instead, once a trade route is created, it can only grow and cannot be moved, and that dead asteroids count as un-avoidable blockages...will this be addressed in a future patch?
