title: Prestashop 1.6 vouchers not applied to other addresses
body: <p>so I set up free shipping vouchers above a certain price in Prestashop 1.6 (free shipping with carrier X above $XXX for certain countries, free shipping with carrier Y above $YYY for certain other countries).</p>
  
  <p>But when on the cart page (one page checkout) I change the shipping address to a second address it does not apply these free shipping vouchers. They are only applied on the first address.</p>
  
  <p>Does anyone have any experience with this?</p>
  
  <p>Thanks!</p>