![Exclamation :!:](./images/smilies/icon_exclaim.gif)
Suppose e.g. that you already have a train operating between A and B, but want to extend the routing to "C". DON"T DO IT while the train is still in transit. If the routing is change, in a number of scenarios, but not all, that you may completely lose your revenue of the haul.
![frustration !hairpull!](./images/smilies/hairpull.gif)
![roll_laugh ^**lylgh](./images/smilies/lachliegen.gif)
HINT: Wait until that train gets to any established destination and is "UNLOADING", then you can make any changes you want. There could also be a change or loss of revenue if you make the change during the "LOADING" as well.
![!DUH! *!*!*!](./images/smilies/smilie120.gif)
This could save you some revenue, but don't ask me why it happens in some scenarios, and not in all of them. But, if in doubt if a particular scenario could have that problem, you could make a test of at least 1 train, to see the results.
![salute :salute:](./images/smilies/salute.gif)