Talk:Missile Silo/@comment-92.21.197.98-20130525105156

Okay I have just unlocked the griffen which now costs 4 million in each resource to buy.

My question is if  I buy as many griffen missles as I can an then dont use them but start upgrading them in the defence lab, will the ones I already own become higher levels or will I have to use those ones and then buy the upgraded missles at a higher price?