ACP2E-741: Scheduled update settings not saved if originally added by running update

- fix

Author: o-dubovyk

app/code/Magento/Catalog/Controller/Adminhtml/Product/Initialization/Helper.php

@@ -121,6 +121,24 @@ class Helper
      */
     private $categoryLinkFactory;
 
+    /**
+     * @var array
+     */
+    private $productDataKeys = [
+        'weight',
+        'special_price',
+        'cost',
+        'country_of_manufacture',
+        'description',
+        'short_description',
+        'meta_description',
+        'meta_keyword',
+        'meta_title',
+        'page_layout',
+        'custom_design',
+        'gift_wrapping_price'
+    ];
+
     /**
      * Constructor
      *
@@ -203,6 +221,12 @@ public function initializeFromData(Product $product, array $productData)
             $productData['product_has_weight'] = 0;
         }
 
+        foreach ($productData as $key => $value) {
+            if (in_array($key, $this->productDataKeys) && $value === '') {
+                $productData[$key] = null;
+            }
+        }
+
         foreach (['category_ids', 'website_ids'] as $field) {
             if (!isset($productData[$field])) {
                 $productData[$field] = [];