However bankers can no longer send your food out of your region. They can request that you set auto transport orders, but that is entirely under your control. If you have a surplus that no one is contacting you about, remember that unless you have the warehouse space it will decay quicker, and see what you can do to strike up some deals to sell the food yourself.
One more thing, winters will now be much harder on regions like rural, chances are you won't produce enough food each week to feed the region, or at least that is the experience in Arcaea.