If you have permament residance visa of Qatar and want to change your sponserhip your visa will automatically change to visat visa it is same visa you had before but change to visit status you can still work in Qatar and can go to your home country and can comeback. Qatar started this type of visa because a lot of people living here for the last 40 or more than that and eligible for passort but Qatar does not offer so they changing this and also once your visa status change you can not apply even if you go to human rights anywhere in the world because your status in this country going to be as visitor so that the difference but you dont need to worry about. those people who are getting Qatar visa for the first time their status in this counry is visit working visa is well....