ACP2E-2129: customer is reporting their table rates are not updating via CSV any longer

- addressed bugs

Author: aplapana

app/code/Magento/OfflineShipping/Model/Plugin/AsyncConfig/Model/AsyncConfigPublisherPlugin.php

@@ -57,7 +57,8 @@ public function beforeSaveConfigData(AsyncConfigPublisher $subject, array $confi
     {
         $request = $this->requestFactory->create();
         $files = (array)$request->getFiles();
-        if (!empty($files['groups']['tablerate']['fields']['import']['value'])) {
+
+        if (!empty($files['groups']['tablerate']['fields']['import']['value']['name'])) {
             $varDir = $this->filesystem->getDirectoryWrite(DirectoryList::VAR_IMPORT_EXPORT);
             $randomizedName = $this->rand->getRandomString(6) . '_' .
                 $configData['groups']['tablerate']['fields']['import']['value']['name'];

app/code/Magento/OfflineShipping/Model/ResourceModel/Carrier/Tablerate.php

@@ -15,6 +15,7 @@
 use Magento\AsyncConfig\Setup\ConfigOptionsList;
 use Magento\Framework\App\Config\ScopeConfigInterface;
 use Magento\Framework\App\DeploymentConfig;
+use Magento\Framework\App\Filesystem\DirectoryList;
 use Magento\Framework\App\ObjectManager;
 use Magento\Framework\App\RequestFactory;
 use Magento\Framework\DataObject;
@@ -417,11 +418,10 @@ private function getCsvFile($filePath)
     private function removeFile(string $filePath): bool
     {
         $pathInfo = $this->ioFile->getPathInfo($filePath);
-        $dirName = $pathInfo['dirname'] ?? '';
         $fileName = $pathInfo['basename'] ?? '';
 
         try {
-            $directoryWrite = $this->filesystem->getDirectoryWrite($dirName);
+            $directoryWrite = $this->filesystem->getDirectoryWrite(DirectoryList::VAR_IMPORT_EXPORT);
             return $directoryWrite->delete($fileName);
         } catch (FileSystemException $exception) {
             return false;

app/code/Magento/OfflineShipping/Model/ResourceModel/Carrier/Tablerate/Import.php

@@ -131,6 +131,7 @@ public function getColumns()
     public function getData(ReadInterface $file, $websiteId, $conditionShortName, $conditionFullName, $bunchSize = 5000)
     {
         $this->errors = [];
+        $this->uniqueHash = [];
 
         $headers = $this->getHeaders($file);
         /** @var ColumnResolver $columnResolver */