Factory buildings that have been already placed should not be recycled at all, since there is a limit to how many factory buildings are allowed to be picked up at once. Since I can't check when a factory building item is uncrafted (without wasting a ton of UPS), factory buildings would still count towards that limit, permanently, once uncrafted. The only way I could prevent that is by adding my own uncrafting recipes, but I'm not gonna do that, because I don't think it's worth it. 500 measly iron and 100 copper? Once you reach Mk3s, your factory can produce those resources faster than it takes you to even find the appropriate uncraft button!
