Brokers are not fetching from other planets in the same system

[Deantwo]

I thought airports do that on their own and brokers aren't related to in-system stuff.  Seemed to work last week or so anyhow.

You misunderstood the issue.

A broker is setup to send shipments of X to another solar system. The broker's city does not have X in its storage. X is however available on another world in the broker's solar system, but the broker is unable to fetch X from that other world's storage.