title: RedirectToRoutePermanent doesn't accept Action as parameter
body: <p>I'd like to do this: </p>
  
  <pre><code>return RedirectToRoutePermanent("Dealers", new { action = "Join" });
  </code></pre>
  
  <p>but instead I had to do this to make it work: </p>
  
  <pre><code>return RedirectPermanent("/dealers/join");  
  </code></pre>
  
  <p>Join is an action in the Dealers controller, and another route works fine with being routed to the Dealers controller. But when I try things this way, it errors with no route found. Any ideas?</p>