I have only used the transport route system so far where you have to check the appropriate boxes for each good you want to transport in both the sending and the receiving city. These checks are apparently saved with the game. So are the amounts of goods to stay in the city or the max storage in the receiving city. Some bad news: I had two CTDs during game play. Both happened in the same turn when I hit the next turn button. After playing that turn a third time with multiple savings in between I could finally get to the next turn. It was not reproducable so I have no save game. Pretty regular is the behaviour that after Alt+Tabbing out of Col into another program Windows Explorer crashes. Fortunately Windows 7 these days just restarts it. Still, it is a bit unnerving as you always half expect a full crash.