Traders will already try to alter their route to make sure they can supply their improvement, but if there are no routes available, the trade route will simply silently be canceled. In my opinion, there are two possible solutions to this: cancel the errand and possibly refund some resources, or make sure the trade route gets recreated as soon as a route becomes available again.
Traders will already try to alter their route to make sure they can supply their improvement, but if there are no routes available, the trade route will simply silently be canceled. In my opinion, there are two possible solutions to this: cancel the errand and possibly refund some resources, or make sure the trade route gets recreated as soon as a route becomes available again.