Okay, so sometime sI'll design a ship style. Later, when I've teched up, I go back to that ship and edit its modules, sticking more weapons on and that sort of thing.
And the game doesn't really "overwrite" the design, instead it makes another one. And while in my production menus I only see one version of it, it acts like there are multiples. So, when I tell a planet to produce the ship, sometimes they will produce the older, obsolete models of the ship.
IT IS INFURIATING.
Is there some way to get around this?