Again with Civ Industry Priorities:
I put in a new JG network and plopped some infrastructure down on two planets in alpha centauri. Predictably, a few colony ships departed and plopped folks on the worlds. However, despite the negative growth on these worlds, the freighters would refuse to deliver infrastructure anywhere but Mars, which was now a budding 25 million.
I took that opprotunity to set Mars to "Source" and lo, the freighters left for Alpha Centauri, thank goodness. The colonists need new shoes! And domes. It be cold and airless on these rocks.