diff --git a/app/code/Magento/Catalog/Block/Product/ListProduct.php b/app/code/Magento/Catalog/Block/Product/ListProduct.php
index 7be200b769c53..f180b82e8aaea 100644
--- a/app/code/Magento/Catalog/Block/Product/ListProduct.php
+++ b/app/code/Magento/Catalog/Block/Product/ListProduct.php
@@ -296,7 +296,7 @@ public function prepareSortableFieldsByCategory($category)
         }
         $availableOrders = $this->getAvailableOrders();
         if (!$this->getSortBy()) {
-            $categorySortBy = $category->getDefaultSortBy();
+            $categorySortBy = $this->getDefaultSortBy() ?: $category->getDefaultSortBy();
             if ($categorySortBy) {
                 if (!$availableOrders) {
                     $availableOrders = $this->_getConfig()->getAttributeUsedForSortByArray();
diff --git a/app/code/Magento/Catalog/Block/Product/ProductList/Toolbar.php b/app/code/Magento/Catalog/Block/Product/ProductList/Toolbar.php
index e4b335cc9d6d4..74df2024cfcf7 100644
--- a/app/code/Magento/Catalog/Block/Product/ProductList/Toolbar.php
+++ b/app/code/Magento/Catalog/Block/Product/ProductList/Toolbar.php
@@ -356,7 +356,7 @@ public function removeOrderFromAvailableOrders($order)
     }
 
     /**
-     * Compare defined order field vith current order field
+     * Compare defined order field with current order field
      *
      * @param string $order
      * @return bool
diff --git a/app/code/Magento/Catalog/Model/Layer/Search/CollectionFilter.php b/app/code/Magento/Catalog/Model/Layer/Search/CollectionFilter.php
index dfb862d4d2141..abf8f015bf4f4 100644
--- a/app/code/Magento/Catalog/Model/Layer/Search/CollectionFilter.php
+++ b/app/code/Magento/Catalog/Model/Layer/Search/CollectionFilter.php
@@ -8,7 +8,6 @@
 use Magento\Catalog\Model\Config;
 use Magento\Catalog\Model\Layer\CollectionFilterInterface;
 use Magento\Catalog\Model\Product\Visibility;
-use Magento\Framework\DB\Select;
 use Magento\Store\Model\StoreManagerInterface;
 
 class CollectionFilter implements CollectionFilterInterface
@@ -63,7 +62,6 @@ public function filter(
             ->addTaxPercents()
             ->addStoreFilter()
             ->addUrlRewrite()
-            ->setVisibility($this->productVisibility->getVisibleInSearchIds())
-            ->setOrder('relevance', Select::SQL_DESC);
+            ->setVisibility($this->productVisibility->getVisibleInSearchIds());
     }
 }
diff --git a/app/code/Magento/CatalogImportExport/Model/Export/Product.php b/app/code/Magento/CatalogImportExport/Model/Export/Product.php
index bc2dde2da2ce2..0b7d2f3a453a6 100644
--- a/app/code/Magento/CatalogImportExport/Model/Export/Product.php
+++ b/app/code/Magento/CatalogImportExport/Model/Export/Product.php
@@ -874,13 +874,11 @@ protected function collectRawData()
                     }
 
                     if ($this->_attributeTypes[$code] !== 'multiselect') {
-                        if (is_scalar($attrValue)) {
-                            if (!in_array($fieldName, $this->_getExportMainAttrCodes())) {
-                                $additionalAttributes[$fieldName] = $fieldName .
-                                    ImportProduct::PAIR_NAME_VALUE_SEPARATOR . $attrValue;
-                            }
-                            $data[$itemId][$storeId][$fieldName] = $attrValue;
+                        if (!in_array($fieldName, $this->_getExportMainAttrCodes())) {
+                            $additionalAttributes[$fieldName] = $fieldName .
+                                ImportProduct::PAIR_NAME_VALUE_SEPARATOR . $attrValue;
                         }
+                        $data[$itemId][$storeId][$fieldName] = $attrValue;
                     } else {
                         $this->collectMultiselectValues($item, $code, $storeId);
                         if (!empty($this->collectedMultiselectsData[$storeId][$itemId][$code])) {
diff --git a/app/code/Magento/CatalogImportExport/Model/Export/RowCustomizer/Composite.php b/app/code/Magento/CatalogImportExport/Model/Export/RowCustomizer/Composite.php
index 1997d39b47efc..f1559822bbc3b 100644
--- a/app/code/Magento/CatalogImportExport/Model/Export/RowCustomizer/Composite.php
+++ b/app/code/Magento/CatalogImportExport/Model/Export/RowCustomizer/Composite.php
@@ -40,7 +40,8 @@ public function __construct(ObjectManagerInterface $objectManager, $customizers
     public function prepareData($collection, $productIds)
     {
         foreach ($this->customizers as $className) {
-            $this->objectManager->get($className)->prepareData($collection, $productIds);
+            $customCollection = clone $collection;
+            $this->objectManager->get($className)->prepareData($customCollection, $productIds);
         }
     }
 
diff --git a/app/code/Magento/CatalogSearch/Block/Result.php b/app/code/Magento/CatalogSearch/Block/Result.php
index 072b76a797339..a1149d83202bb 100644
--- a/app/code/Magento/CatalogSearch/Block/Result.php
+++ b/app/code/Magento/CatalogSearch/Block/Result.php
@@ -133,12 +133,13 @@ public function setListOrders()
         /* @var $category \Magento\Catalog\Model\Category */
         $availableOrders = $category->getAvailableSortByOptions();
         unset($availableOrders['position']);
+        $availableOrders['relevance'] = __('Relevance');
 
         $this->getListBlock()->setAvailableOrders(
             $availableOrders
         )->setDefaultDirection(
             'desc'
-        )->setSortBy(
+        )->setDefaultSortBy(
             'relevance'
         );