so basically the IceCold-WoW launcher you install is just a patch called custom items, its not accutally a different/seperate launcher from retail WoW launcher correct? and so when you switch from IceCold-WoW to retail WoW, you delete Cache and IceCold.exe correct? so if i later decide to switch from retail to IceCold-WoW again, what would i all have to do inorder to play again?