Fixed issue #16650: Timing not recorded when exporting results

Made the response to be based on the queried response and not start from scratch. Timings are there initially. If starting from scratch, we loose them.

application/helpers/admin/export/Writer.php

@@ -298,7 +298,7 @@ final public function write(SurveyObj $oSurvey, $sLanguageCode, FormattingOption
         foreach ($oSurvey->responses as $response) {
             // prepare the data for decryption
             $sTokenTableName='tokens_'.$oSurvey->id;
-            $aResponse = array();
+            $aResponse = $response;
             if (tableExists($sTokenTableName)) {
                 $oToken = Token::model($oSurvey->id);
                 $oToken->setAttributes($response, false);