Fix integration tests.

Author: nmalevanec

app/code/Magento/Multishipping/Model/Checkout/Type/Multishipping.php

@@ -1182,7 +1182,7 @@ private function removePlacedItemsFromQuote(array $shippingAddresses, array $pla
     {
         foreach ($shippingAddresses as $address) {
             foreach ($address->getAllItems() as $addressItem) {
-                if (in_array($addressItem->getId(), $placedAddressItems)) {
+                if (in_array($addressItem->getQuoteItemId(), $placedAddressItems)) {
                     if ($addressItem->getProduct()->getIsVirtual()) {
                         $addressItem->isDeleted(true);
                     } else {
@@ -1232,7 +1232,7 @@ private function searchQuoteAddressId(OrderInterface $order, array $addresses):
         $item = array_pop($items);
         foreach ($addresses as $address) {
             foreach ($address->getAllItems() as $addressItem) {
-                if ($addressItem->getId() == $item->getQuoteItemId()) {
+                if ($addressItem->getQuoteItemId() == $item->getQuoteItemId()) {
                     return (int)$address->getId();
                 }
             }