Конвертация Битрикс из Windows-1251 в UTF-8

php_value mbstring.func_overload 2
php_value mbstring.internal_encoding UTF-8

define("BX_UTF", true);

utf_mode => array('value' => true, 'readonly' => true)

$DB->Query("SET NAMES 'utf8'");
$DB->Query('SET collation_connection = "utf8_unicode_ci"');

$connection = Bitrix\Main\Application::getConnection();
$connection->queryExecute('SET NAMES "utf8"');
$connection->queryExecute('SET collation_connection = "utf8_unicode_ci"');