Hi there - I am not sure what the best practice is, but I have a strategy that I have found to work well in this situation. I will use the QA link in a new private browsing session to dump me into the activity (if you want, by setting the page delivery setting to something like wwww.domain.com/ or wwww.domain.com/search/.) Then, once I am in the activity, I navigate to the page with the query string, without the QA string, as the session should retain that QA cookie. Once you're done QAing, you can go replace the page delivery settings.