Answer::prepareFieldsToCopy

public function prepareFieldsToCopy(Container $container, array $fields)
{
	unset($fields["ID"]);

	if ($container->getParentId())
	{
		$fields["QUESTION_ID"] = $container->getParentId();
	}

	if ($this->resetVotingResult)
	{
		unset($fields["COUNTER"]);
	}

	return $fields;
}