MAGETWO-90149: Product Import does not allow store-specific Custom Option labels

Author: OlgaVasyltsun

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

@@ -760,8 +760,7 @@ protected function _findExistingOptionId(array $newOptionData, array $newOptionT
             ksort($newOptionTitles);
             $existingOptions = $this->_oldCustomOptions[$productId];
             foreach ($existingOptions as $optionId => $optionData) {
-                if (
-                    $optionData['type'] == $newOptionData['type']
+                if ($optionData['type'] == $newOptionData['type']
                     && $optionData['titles'][Store::DEFAULT_STORE_ID] == $newOptionTitles[Store::DEFAULT_STORE_ID]
                 ) {
                     return $optionId;