if (null !== $dateBefore && '' !== $dateBefore) {
            $dateFormatBefore = $configuration->getSearchIndex('date-format-before');
            if (null !== $dateFormatBefore && '' !== $dateFormatBefore) {
                $dateBefore = $this->getFormattedDate($dateBefore, $dateFormatBefore);
                $qa->match(array('deletedAt' => array('$lt' => new \MongoDate(strtotime($dateBefore)))));