#25540: Products are not displaying infront end after updating product via importing CSV.

Author: p-bystritsky

app/code/Magento/BundleImportExport/Model/Import/Product/Type/Bundle.php

@@ -6,14 +6,15 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
 namespace Magento\BundleImportExport\Model\Import\Product\Type;
 
-use Magento\Catalog\Model\ResourceModel\Product\Attribute\CollectionFactory as AttributeCollectionFactory;
-use Magento\Eav\Model\ResourceModel\Entity\Attribute\Set\CollectionFactory as AttributeSetCollectionFactory;
-use Magento\Framework\App\ObjectManager;
 use Magento\Bundle\Model\Product\Price as BundlePrice;
 use Magento\Catalog\Model\Product\Type\AbstractType;
+use Magento\Catalog\Model\ResourceModel\Product\Attribute\CollectionFactory as AttributeCollectionFactory;
 use Magento\CatalogImportExport\Model\Import\Product;
+use Magento\Eav\Model\ResourceModel\Entity\Attribute\Set\CollectionFactory as AttributeSetCollectionFactory;
+use Magento\Framework\App\ObjectManager;
 use Magento\Framework\App\ResourceConnection;
 use Magento\Framework\EntityManager\MetadataPool;
 use Magento\Store\Model\StoreManagerInterface;
@@ -26,6 +27,9 @@
  */
 class Bundle extends \Magento\CatalogImportExport\Model\Import\Product\Type\AbstractType
 {
+    /**
+     * phpcs:disable Magento2.Commenting.ConstantsPHPDocFormatting
+     */
 
     /**
      * Delimiter before product option value.
@@ -62,6 +66,10 @@ class Bundle extends \Magento\CatalogImportExport\Model\Import\Product\Type\Abst
      */
     const SELECTION_PRICE_TYPE_PERCENT = 1;
 
+    /**
+     * phpcs:enable Magento2.Commenting.ConstantsPHPDocFormatting
+     */
+
     /**
      * Array of cached options.
      *
@@ -133,7 +141,7 @@ class Bundle extends \Magento\CatalogImportExport\Model\Import\Product\Type\Abst
     protected $_optionTypeMapping = [
         'dropdown' => 'select',
         'radiobutton' => 'radio',
-        'checkbox'  => 'checkbox',
+        'checkbox' => 'checkbox',
         'multiselect' => 'multi',
     ];
 
@@ -543,7 +551,7 @@ protected function populateExistingSelections($existingOptions)
                             ? $this->_bundleFieldMapping[$origKey]
                             : $origKey;
                         if (
-                            !isset($this->_cachedOptions[$existingSelection['parent_product_id']][$optionTitle]['selections'][$selectIndex][$key])
+                        !isset($this->_cachedOptions[$existingSelection['parent_product_id']][$optionTitle]['selections'][$selectIndex][$key])
                         ) {
                             $this->_cachedOptions[$existingSelection['parent_product_id']][$optionTitle]['selections'][$selectIndex][$key] =
                                 $existingSelection[$origKey];
@@ -616,6 +624,7 @@ protected function populateInsertOptionValues(array $optionIds): array
                     if ($assoc['position'] == $this->_cachedOptions[$entityId][$key]['index']
                         && $assoc['parent_id'] == $entityId) {
                         $option['parent_id'] = $entityId;
+                        //phpcs:ignore Magento2.Performance.ForeachArrayMerge
                         $optionValues = array_merge(
                             $optionValues,
                             $this->populateOptionValueTemplate($option, $optionId)
@@ -675,10 +684,7 @@ private function insertParentChildRelations()
             $childIds = [];
             foreach ($options as $option) {
                 foreach ($option['selections'] as $selection) {
-                    if (!isset($selection['parent_product_id'])) {
-                        if (!isset($this->_cachedSkuToProducts[$selection['sku']])) {
-                            continue;
-                        }
+                    if (isset($this->_cachedSkuToProducts[$selection['sku']])) {
                         $childIds[] = $this->_cachedSkuToProducts[$selection['sku']];
                     }
                 }
@@ -735,17 +741,19 @@ protected function deleteOptionsAndSelections($productIds)
         $optionTable = $this->_resource->getTableName('catalog_product_bundle_option');
         $optionValueTable = $this->_resource->getTableName('catalog_product_bundle_option_value');
         $selectionTable = $this->_resource->getTableName('catalog_product_bundle_selection');
-        $valuesIds =  $this->connection->fetchAssoc($this->connection->select()->from(
-            ['bov' => $optionValueTable],
-            ['value_id']
-        )->joinLeft(
-            ['bo' => $optionTable],
-            'bo.option_id = bov.option_id',
-            ['option_id']
-        )->where(
-            'parent_id IN (?)',
-            $productIds
-        ));
+        $valuesIds = $this->connection->fetchAssoc(
+            $this->connection->select()->from(
+                ['bov' => $optionValueTable],
+                ['value_id']
+            )->joinLeft(
+                ['bo' => $optionTable],
+                'bo.option_id = bov.option_id',
+                ['option_id']
+            )->where(
+                'parent_id IN (?)',
+                $productIds
+            )
+        );
         $this->connection->delete(
             $optionValueTable,
             $this->connection->quoteInto('value_id IN (?)', array_keys($valuesIds))