I have a commercial city with no industry and there are ~5000 unfulfilled freight orders. The amount of freight commuting in fluctuates between 1000 to 4000 but never enough to satisfy all 5000 unfulfilled freight.
How do I get more freight to "commute in"?
Things I have tried:
Building a trade depot/port in my commercial city: This causes MORE unfulfilled freight orders since the trade depot/port expects freight shipments from local industries.
Building an industrial city next door that has excess freight: My industrial city has about 2000 freight "commuting out" yet it doesn't seem to have a significant effect on my commercial city. When I look at the freight view from region view, it says my industrial city still has a fair amount of unfulfilled freight orders even though it is already shipping out 2000 in excess (I have no idea what is going on here).