MC-36779: Product still present in the Wish List after added to order

Author: SmVladyslav

app/code/Magento/Sales/Model/AdminOrder/Create.php

@@ -970,7 +970,7 @@ public function applySidebarData($data)
                 $item = $this->getCustomerCart()->getItemById($itemId);
                 if ($item) {
                     $this->moveQuoteItem($item, 'order', $qty);
-                    $this->removeItem($itemId, 'cart');
+                    $data['remove'][$itemId] = 'cart';
                 }
             }
         }
@@ -984,6 +984,7 @@ public function applySidebarData($data)
                 );
                 if ($item->getId()) {
                     $this->addProduct($item->getProduct(), $item->getBuyRequest()->toArray());
+                    $data['remove'][$itemId] = 'wishlist';
                 }
             }
         }

dev/tests/integration/testsuite/Magento/Sales/Controller/Adminhtml/Order/Create/LoadBlockTest.php

@@ -16,6 +16,7 @@
 use Magento\Store\Model\StoreManagerInterface;
 use Magento\TestFramework\Quote\Model\GetQuoteByReservedOrderId;
 use Magento\TestFramework\TestCase\AbstractBackendController;
+use Magento\Wishlist\Model\Wishlist;
 
 /**
  * Class checks create order load block controller.
@@ -201,6 +202,35 @@ public function testMoveFromOrderToShoppingCart(): void
         $this->quoteIdsToRemove[] = $customerCart->getId();
     }
 
+    /**
+     * Check that Wishlist item is deleted after it has been added to Order.
+     *
+     * @return void
+     * @magentoDataFixture Magento/Wishlist/_files/wishlist_with_simple_product.php
+     */
+    public function testAddProductToOrderFromWishList(): void
+    {
+        /** @var Wishlist $wishlist */
+        $wishlist = $this->_objectManager->create(Wishlist::class);
+        $wishlistItems = $wishlist->loadByCustomerId(1)->getItemCollection();
+        $this->assertCount(1, $wishlistItems);
+
+        $post = $this->hydratePost([
+            'sidebar' => [
+                'add_wishlist_item' => [
+                    $wishlistItems->getFirstItem()->getId() => 1,
+                ],
+            ],
+        ]);
+        $params = $this->hydrateParams();
+        $this->dispatchWitParams($params, $post);
+
+        $wishlistItems->clear();
+        $this->assertEmpty($wishlistItems);
+        $quoteItems = $this->session->getQuote()->getItemsCollection();
+        $this->assertCount(1, $quoteItems);
+    }
+
     /**
      * Check customer quotes
      *