BTW you don't have to do that. If you transfer to another ship, any cargo you had should still be in the hold; even mission cargo. The only problem is when the second ship doesn't have enough cargo capacity, but then you can't do what you suggested anyway.For me, it would just be just somewhere temporary to put my cargo while I am changing ships. So I don't have to sell my cargo, hop into my new ship, then rebuy the cargo (if it's even still available). For this reason, all they need to do is to ban you from launching without loading that cargo back in again. Think of it as sitting stacked on the landing pad itself, and you've gotta move that before you fire your thrusters or else the canisters will be blown all over the shop.