MAGETWO-60110: [Github] Shipping Estimation Address is Merged with Customer Default Address during Checkout #6869

Author: omiroshnichenko

app/code/Magento/Checkout/view/frontend/web/js/view/cart/shipping-estimation.js

@@ -52,9 +52,9 @@ define(
                             addressConverter.quoteAddressToFormAddressData(address) :
                             {
                                 // only the following fields must be used by estimation form data provider
-                                country_id: address.countryId,
+                                'country_id': address.countryId,
                                 region: address.region,
-                                region_id: address.regionId,
+                                'region_id': address.regionId,
                                 postcode: address.postcode
                             };
                         checkoutProvider.set(