diff --git a/app/code/Magento/Bundle/Controller/Adminhtml/Bundle/Product/Edit/Duplicate.php b/app/code/Magento/Bundle/Controller/Adminhtml/Bundle/Product/Edit/Duplicate.php
index 9c7040f8787bf..b24d2e852b3cf 100644
--- a/app/code/Magento/Bundle/Controller/Adminhtml/Bundle/Product/Edit/Duplicate.php
+++ b/app/code/Magento/Bundle/Controller/Adminhtml/Bundle/Product/Edit/Duplicate.php
@@ -6,6 +6,9 @@
  */
 namespace Magento\Bundle\Controller\Adminhtml\Bundle\Product\Edit;
 
+/**
+ * @deprecated
+ */
 class Duplicate extends \Magento\Catalog\Controller\Adminhtml\Product\Duplicate
 {
 }
diff --git a/app/code/Magento/Catalog/Block/Adminhtml/Product/Edit.php b/app/code/Magento/Catalog/Block/Adminhtml/Product/Edit.php
index 285caa974fd17..d267b58e30687 100644
--- a/app/code/Magento/Catalog/Block/Adminhtml/Product/Edit.php
+++ b/app/code/Magento/Catalog/Block/Adminhtml/Product/Edit.php
@@ -242,6 +242,7 @@ public function getProductSetId()
 
     /**
      * @return string
+     * @deprecated
      */
     public function getDuplicateUrl()
     {
diff --git a/app/code/Magento/Catalog/Controller/Adminhtml/Product/Duplicate.php b/app/code/Magento/Catalog/Controller/Adminhtml/Product/Duplicate.php
index 63e52eead064c..0d22476b4404c 100644
--- a/app/code/Magento/Catalog/Controller/Adminhtml/Product/Duplicate.php
+++ b/app/code/Magento/Catalog/Controller/Adminhtml/Product/Duplicate.php
@@ -9,6 +9,9 @@
 use Magento\Backend\App\Action;
 use Magento\Catalog\Controller\Adminhtml\Product;
 
+/**
+ * @deprecated
+ */
 class Duplicate extends \Magento\Catalog\Controller\Adminhtml\Product
 {
     /**
diff --git a/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php b/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php
index 825d0ee032d6c..dc8b901936551 100644
--- a/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php
+++ b/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php
@@ -157,9 +157,19 @@ public function execute()
                 );
 
                 if ($redirectBack === 'duplicate') {
-                    $product->unsetData('quantity_and_stock_status');
-                    $newProduct = $this->productCopier->copy($product);
-                    $this->checkUniqueAttributes($product);
+                    if ($product->getStoreId() === \Magento\Store\Model\Store::DEFAULT_STORE_ID) {
+                        $productToDuplicate = $product;
+                    } else {
+                        $productToDuplicate = $this->productRepository->get(
+                            $product->getSku(),
+                            false,
+                            \Magento\Store\Model\Store::DEFAULT_STORE_ID,
+                            true
+                        );
+                    }
+
+                    $productToDuplicate->unsetData('quantity_and_stock_status');
+                    $newProduct = $this->productCopier->copy($productToDuplicate);
                     $this->messageManager->addSuccessMessage(__('You duplicated the product.'));
                 }
             } catch (\Magento\Framework\Exception\LocalizedException $e) {
diff --git a/app/code/Magento/Catalog/Model/Product/Copier.php b/app/code/Magento/Catalog/Model/Product/Copier.php
index 44ebdf0f1f283..48429c8476487 100644
--- a/app/code/Magento/Catalog/Model/Product/Copier.php
+++ b/app/code/Magento/Catalog/Model/Product/Copier.php
@@ -3,10 +3,17 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
+
 namespace Magento\Catalog\Model\Product;
 
 use Magento\Catalog\Api\Data\ProductInterface;
+use Magento\Catalog\Api\ProductRepositoryInterface;
 use Magento\Catalog\Model\Product;
+use Magento\Catalog\Model\Product\Option\Repository;
+use Magento\Catalog\Model\ProductFactory;
+use Magento\Framework\App\ObjectManager;
+use Magento\Framework\EntityManager\MetadataPool;
 
 /**
  * Catalog product copier.
@@ -17,42 +24,49 @@
  */
 class Copier
 {
-    /**
-     * @var Option\Repository
-     */
-    protected $optionRepository;
-
     /**
      * @var CopyConstructorInterface
      */
     protected $copyConstructor;
 
     /**
-     * @var \Magento\Catalog\Model\ProductFactory
+     * @var ProductFactory
      */
     protected $productFactory;
 
     /**
-     * @var \Magento\Framework\EntityManager\MetadataPool
+     * @var Option\Repository
+     */
+    protected $optionRepository;
+
+    /**
+     * @var MetadataPool
      */
     protected $metadataPool;
 
     /**
      * @param CopyConstructorInterface $copyConstructor
-     * @param \Magento\Catalog\Model\ProductFactory $productFactory
+     * @param ProductFactory $productFactory
+     * @param ProductRepositoryInterface|null $productRepository
+     * @param MetadataPool|null $metadataPool
      */
     public function __construct(
         CopyConstructorInterface $copyConstructor,
-        \Magento\Catalog\Model\ProductFactory $productFactory
+        ProductFactory $productFactory,
+        Repository $optionRepository = null,
+        MetadataPool $metadataPool = null
     ) {
         $this->productFactory = $productFactory;
         $this->copyConstructor = $copyConstructor;
+        $this->optionRepository = $optionRepository ?: ObjectManager::getInstance()->get(Repository::class);
+        $this->metadataPool = $metadataPool ?: ObjectManager::getInstance()->get(MetadataPool::class);
     }
 
     /**
      * Create product duplicate
      *
-     * @param \Magento\Catalog\Model\Product $product
+     * @param \Magento\Catalog\Model\Product|\Magento\Catalog\Api\Data\ProductInterface $product
+     *
      * @return \Magento\Catalog\Model\Product
      */
     public function copy(Product $product)
@@ -61,7 +75,7 @@ public function copy(Product $product)
         $product->getCategoryIds();
 
         /** @var \Magento\Framework\EntityManager\EntityMetadataInterface $metadata */
-        $metadata = $this->getMetadataPool()->getMetadata(ProductInterface::class);
+        $metadata = $this->metadataPool->getMetadata(ProductInterface::class);
 
         /** @var \Magento\Catalog\Model\Product $duplicate */
         $duplicate = $this->productFactory->create();
@@ -79,11 +93,12 @@ public function copy(Product $product)
         $this->copyConstructor->build($product, $duplicate);
         $this->setDefaultUrl($product, $duplicate);
         $this->setStoresUrl($product, $duplicate);
-        $this->getOptionRepository()->duplicate($product, $duplicate);
+        $this->optionRepository->duplicate($product, $duplicate);
         $product->getResource()->duplicate(
             $product->getData($metadata->getLinkField()),
             $duplicate->getData($metadata->getLinkField())
         );
+
         return $duplicate;
     }
 
@@ -92,7 +107,9 @@ public function copy(Product $product)
      *
      * @param Product $product
      * @param Product $duplicate
+     *
      * @return void
+     * @throws \Exception
      */
     private function setDefaultUrl(Product $product, Product $duplicate) : void
     {
@@ -114,7 +131,9 @@ private function setDefaultUrl(Product $product, Product $duplicate) : void
      *
      * @param Product $product
      * @param Product $duplicate
+     *
      * @return void
+     * @throws \Exception
      */
     private function setStoresUrl(Product $product, Product $duplicate) : void
     {
@@ -158,38 +177,8 @@ private function setStoresUrl(Product $product, Product $duplicate) : void
     private function modifyUrl(string $urlKey) : string
     {
         return preg_match('/(.*)-(\d+)$/', $urlKey, $matches)
-                    ? $matches[1] . '-' . ($matches[2] + 1)
-                    : $urlKey . '-1';
-    }
-
-    /**
-     * Returns product option repository.
-     *
-     * @return Option\Repository
-     * @deprecated 101.0.0
-     */
-    private function getOptionRepository()
-    {
-        if (null === $this->optionRepository) {
-            $this->optionRepository = \Magento\Framework\App\ObjectManager::getInstance()
-                ->get(\Magento\Catalog\Model\Product\Option\Repository::class);
-        }
-        return $this->optionRepository;
-    }
-
-    /**
-     * Returns metadata pool.
-     *
-     * @return \Magento\Framework\EntityManager\MetadataPool
-     * @deprecated 101.0.0
-     */
-    private function getMetadataPool()
-    {
-        if (null === $this->metadataPool) {
-            $this->metadataPool = \Magento\Framework\App\ObjectManager::getInstance()
-                ->get(\Magento\Framework\EntityManager\MetadataPool::class);
-        }
-        return $this->metadataPool;
+            ? $matches[1] . '-' . ($matches[2] + 1)
+            : $urlKey . '-1';
     }
 
     /**
@@ -198,7 +187,7 @@ private function getMetadataPool()
      * @param array $productData
      * @return array
      */
-    private function removeStockItem(array $productData)
+    private function removeStockItem(array $productData) : array
     {
         if (isset($productData[ProductInterface::EXTENSION_ATTRIBUTES_KEY])) {
             $extensionAttributes = $productData[ProductInterface::EXTENSION_ATTRIBUTES_KEY];
@@ -206,6 +195,7 @@ private function removeStockItem(array $productData)
                 $extensionAttributes->setData('stock_item', null);
             }
         }
+
         return $productData;
     }
 }
diff --git a/app/code/Magento/Downloadable/Controller/Adminhtml/Downloadable/Product/Edit/Duplicate.php b/app/code/Magento/Downloadable/Controller/Adminhtml/Downloadable/Product/Edit/Duplicate.php
index 3afc55b3d650b..1cf2418ea5d80 100644
--- a/app/code/Magento/Downloadable/Controller/Adminhtml/Downloadable/Product/Edit/Duplicate.php
+++ b/app/code/Magento/Downloadable/Controller/Adminhtml/Downloadable/Product/Edit/Duplicate.php
@@ -6,6 +6,9 @@
  */
 namespace Magento\Downloadable\Controller\Adminhtml\Downloadable\Product\Edit;
 
+/**
+ * @deprecated
+ */
 class Duplicate extends \Magento\Catalog\Controller\Adminhtml\Product\Duplicate
 {
 }