ACP2E-982: Assignment of sources changes after importing data

Author: pradeep1819

app/code/Magento/CatalogImportExport/Model/Import/Product.php

@@ -2336,6 +2336,7 @@ protected function _saveStockItem()
                     $stockItem = $this->getRowExistingStockItem($rowData);
                     $existingStockItemData = $stockItem->getData();
                     $row = $this->formatStockDataForRow($rowData);
+                    $row['explicit_qty'] = array_key_exists('qty', $rowData);
                     $productIdsToReindex[] = $row['product_id'];
                     $storeId = $this->getRowStoreId($rowData);
                     if (!empty(array_diff_assoc($row, $existingStockItemData))

app/code/Magento/CatalogImportExport/Model/StockItemImporter.php

@@ -50,8 +50,8 @@ public function import(array $stockData)
         $entityTable = $stockItemResource->getMainTable();
         try {
             $stockImportData = array_map(
-                function ($stockItemData) {
-                    unset($stockItemData['sku']);
+                static function ($stockItemData) {
+                    unset($stockItemData['sku'], $stockItemData['explicit_qty']);
                     return $stockItemData;
                 },
                 array_values($stockData)