Steve, thanks again for all the work you put into making Aurora such an awesome space opera generator!
I found a minor civilian shipping contracts bug: If you set small numbers of infrastructure to be moved (like 2 infrastructure supplied & 2 infrastructure demanded elsewhere) civilians will never move it. Small numbers works for other things, like shipping individual DSTS, military academies, etc. but not for small amounts of infrastructure.
You often notice this when you order larger amounts of infrastructure shipped. They will ship all of it properly, except for a tiny bit they usually leave left over and never ship to completion. This happened in v1.51, as well.