Task::saveFiles

private function saveFiles(array $fields)
{
	if (
		isset($fields["FILES"])
		&& (isset($this->changes["NEW_FILES"]) || isset($this->changes["DELETED_FILES"]))
	)
	{
		$arNotDeleteFiles = $fields["FILES"];
		CTaskFiles::DeleteByTaskID($this->taskId, $arNotDeleteFiles);
		$this->addFiles($fields);
	}
}