So i have two small size ship models. one is called patriot an the other is called patriot-m2. they are both exactly the same except 1 uses mass drivers the other uses lasers. the laser ship has 1 extra piece so it looks somewhat different. when i upgrade the mass driver ship it says there are blahh number of this ship and that is correct. then on the left it lists the patriot-m2 and scout as options for upgrading but not the patriot. this is very frustrating as it means i lose all my mass driver ships and end up with twice as many laser ships..how do i get this to work properly?