Post by Deleted on Jan 17, 2015 13:27:00 GMT -5
I cannot upgrade Exchange 5 to exchange 6 or Terraforming 2 to 4. I can upgrade exchange 2 and 3 to 6 and Terraforming 1 to 4 though. I'm unsure about the new orbital platform, factory and defense upgrades but I can only assume it shares the same pattern.
