Hi, I have a question about trips to destination and the duration of the trade in turns.

After i change Name='TRADE_ROUTE_TURN_DURATION_BASE'; to 0 in GlobalParameters and tweak land and water refuel values i get wrong trade duration values. Basically they make only one trip to a destination. It is what i intended to get faster trade routes and less refuel.
Example:If a city is 4 tiles away it takes 8 turns to finish, but it says 16 turns.
Would you happen to know why?


Thanks and sorry for bothering :)