I removed the local checkout behavior, because we don't use a gateway. Customers just place the order, and depending on their status make an advance payment or are invoiced.
It looks like the redirect is set in the Universal Email behavior. I will be getting rid of the Email behavior on the confirm page though, so I need to find another way to redirect to the success page. Jason said in another thread to use the store order details behavior to set the redirect unless I use Universal Email.
Would you be able to walk me through the setting of the variables? I don't really know how to do that. The language session is stored throughout the site up to the moment the success page is loaded.