I'm confused and can't find any explanation anywhere: I build an economic trade station, then a population colony, then get the option to build a trade station again, did the population colony replace it? Same with if I build a golan 3, then a 2, then a 1, then get the option to build all of the golans again as if I'm replacing them/deleting them somehow. If so, what is the limit/ restriction for trade stations vs colonies and defense platforms? Especially confusing for me when playing EOTH if I build a golan and one of their unique stations, they seem to replace/ delete each other. Please help! Thank you!