title: Do I need to delete persistent login cookies?
body: <p>I'm following <a href="http://fishbowl.pastiche.org/2004/01/19/persistent_login_cookie_best_practice/" rel="nofollow noreferrer">Charles Miller's persistent login cookie best practice</a>.</p>
  
  <p>After I use the persistent cookie, I issue a new cookie (with the same name, but new token).</p>
  
  <p>But before I issue the new one, do need to delete the old cookie?</p>
  
  <p>If I do not, will the browser just replace the old cookie with the new cookie (since they have the same name)? </p>