I've tried this before and it is creating issues. I'm actually not sure if I tried this in VB or C#, but the result was that the fleets will load just fine, but eventually they will not unload everything, and once they didn't unload everything they will never get rid of the cargo they didn't unload and basically they will only use the capacity of the first freighter in the group as this is the only one that will actually unload to make room for new goods. The rest of the fleet will carry the same goods forever.