hi i'm playing 7. 1, and my terraforming TG is invariably getting lost within days of arriving at a colony site
mercury is a colony site, albeit with no people- this is very early in the game. i send a little squadron of terraforming ships there with a "move" order (and no subsequent orders) and under "special orders" i have it set to "terraform colony". k, i hit a single five day tick, the group is where it's supposed to be, mercury is showing the terraforming installations, swell. next tick, and the tf TG now has "move to #546" listed as it's plotted order and either then or on the next 5 day tick the ships are no longer listed as around mercury. in one instance they had been teleported to luna. i shrugged my shoulders and started terraforming luna and the #546 thing recurred. i've tried moving the ships elsewhere and back, for a 5 second tick and for a 5 day one. i've deleted the whole TF, "fast OOB"ed replacements in.
i've tried setting them to picket mercury, makes no difference. as i said, i've tried to terraform luna (which has a nonzero population, of only one species), and gotten the same result. i'm not going to lie, it's pretty frustrating.