MAGETWO-58062: Ship To section on Checkout's Review & Payments step, clears out the Ship To address on page reload

Author: omiroshnichenko

app/code/Magento/Checkout/view/frontend/web/js/model/shipping-rates-validator.js

@@ -43,7 +43,7 @@ define(
              * @param {Object} validator
              */
             registerValidator: function (carrier, validator) {
-                if (checkoutConfig.activeCarriers.indexOf(carrier) != -1) {
+                if (checkoutConfig.activeCarriers.indexOf(carrier) !== -1) {
                     validators.push(validator);
                 }
             },
@@ -176,7 +176,8 @@ define(
                     address;
 
                 if (this.validateAddressData(addressFlat)) {
-                    address = addressConverter.formAddressDataToQuoteAddress(quote.shippingAddress());
+                    addressFlat = $.extend(true, {}, quote.shippingAddress(), addressFlat);
+                    address = addressConverter.formAddressDataToQuoteAddress(addressFlat);
                     selectShippingAddress(address);
                 }
             },