The system gets wonky when you have an Imperial Naval Base, nominally TL12-15 depending on your continuity, on a TL10 world, and really within about Jump-4 of any Imperium military base. The moment you can offload an automated factory from a cargo hold the technology level should increase to at least TL12 very quickly. At least IMTU. Once you have the ability to throw raw materials in one end and get technology from the other the system stops making sense.