title: Redirect to PayPal breaks sessions
body: <p>I am running into an issue with a redirect and sessions.</p>
  
  <p>The flow of the applications is this:</p>
  
  <p>Customer goes to site
  Adds product to cart
  Selects to checkout with PayPal
  Is redirected to PayPal
  Logs in to PayPal
  Redirected back to site
  Continues through billing/shipping pages
  Confirms the order and submits</p>
  
  <p>This is working in development without an issue.</p>
  
  <p>When I go to the live server, the session keeps getting lost after the redirect to PayPal.</p>
  
  <p>Any idea what it could be?</p>
  
  <p>Extra Info:</p>
  
  <p>I found that when I first go to the website, I have a session ID.</p>
  
  <p>When I go through the checkout process and I am redirect to PayPal, then directed back to the return URL (back to the merchant website), the same session ID is in the cookie. So it looks like the session is not being restarted, but rather that the session data is just empty.</p>