magento site redirects parameter query string and removes query

Our website is redirecting parameter query string requests, so its affecting our tracking. This only happens when its the first time loading a url, so you have to keep changing the id to test it: http://bossustore.com/ps4-playstation-4-slim-500gb-refurbished-a?gclid=tester1234 youll notice when you click it, it removes the query parameters.