Merge branch 'MAGETWO-56073' of github.com:magento-folks/magento2ce into checkout_bugs

Author: omiroshnichenko

app/code/Magento/Checkout/view/frontend/web/js/model/new-customer-address.js

@@ -10,13 +10,13 @@ define([], function () {
      * Returns new address object
      */
     return function (addressData) {
-        var identifier = Date.now();
-        var regionId = null;
+        var identifier = Date.now(),
+            regionId;
 
         if (addressData.region && addressData.region.region_id) {
             regionId = addressData.region.region_id;
         } else if (addressData.country_id && addressData.country_id == window.checkoutConfig.defaultCountryId) {
-            regionId = window.checkoutConfig.defaultRegionId;
+            regionId = window.checkoutConfig.defaultRegionId || undefined;
         }
 
         return {
@@ -25,7 +25,7 @@ define([], function () {
             regionId: regionId || addressData.regionId,
             regionCode: (addressData.region) ? addressData.region.region_code : null,
             region: (addressData.region) ? addressData.region.region : null,
-            customerId: addressData.customer_id,
+            customerId: addressData.customer_id || addressData.customerId,
             street: addressData.street,
             company: addressData.company,
             telephone: addressData.telephone,

app/code/Magento/Checkout/view/frontend/web/js/view/shipping.js

@@ -79,7 +79,6 @@ define(
                     fieldsetName = 'checkout.steps.shipping-step.shippingAddress.shipping-address-fieldset';
 
                 this._super();
-                shippingRatesValidator.initFields(fieldsetName);
 
                 if (!quote.isVirtual()) {
                     stepNavigator.registerStep(
@@ -120,6 +119,7 @@ define(
                     checkoutProvider.on('shippingAddress', function (shippingAddressData) {
                         checkoutData.setShippingAddressFromData(shippingAddressData);
                     });
+                    shippingRatesValidator.initFields(fieldsetName);
                 });
 
                 return this;

app/code/Magento/Customer/view/frontend/web/js/model/customer/address.js

@@ -10,11 +10,17 @@ define([], function() {
      * Returns new address object
      */
     return function (addressData) {
+        var regionId;
+
+        if (addressData.region['region_id'] && addressData.region['region_id'] !== '0') {
+            regionId = addressData.region['region_id'] + '';
+        }
+
         return {
             customerAddressId: addressData.id,
             email: addressData.email,
             countryId: addressData.country_id,
-            regionId: addressData.region_id,
+            regionId: regionId,
             regionCode: addressData.region.region_code,
             region: addressData.region.region,
             customerId: addressData.customer_id,