Обновление цены через CPrice::Update не обновляет цену

$productId = 358;

$res = CPrice::GetList(
   [],
  [
    'PRODUCT_ID' => $productId,
    //'CATALOG_GROUP_ID' => $PRICE_TYPE_ID
   ]
);
if ($price = $res->Fetch()) {
   print_r($price);
}

$res = CPrice::Update($productId, [
   'PRICE' => 13700, //13629
   'CURRENCY' => 'RUB',
   //'BASE' => 'Y',
   //'CATALOG_GROUP_ID' => 1
]);

var_dump('RESULT:', $res);

$res = CPrice::GetList(
   [],
  [
    'PRODUCT_ID' => $productId,
    //'CATALOG_GROUP_ID' => $PRICE_TYPE_ID
   ]
);
if ($price = $res->Fetch()) {
   print_r($price);
}

Array
(
    [ID] => 313
    [PRODUCT_ID] => 358
    [EXTRA_ID] => 
    [CATALOG_GROUP_ID] => 1
    [PRICE] => 13629.00
    [CURRENCY] => RUB
    [TIMESTAMP_X] => 18.08.2015 10:58:15
    [QUANTITY_FROM] => 
    [QUANTITY_TO] => 
    [BASE] => Y
    [SORT] => 100
    [CATALOG_GROUP_NAME] => Розничная цена
    [CAN_ACCESS] => Y
    [CAN_BUY] => Y
)
string(7) "RESULT:"
int(358)
Array
(
    [ID] => 313
    [PRODUCT_ID] => 358
    [EXTRA_ID] => 
    [CATALOG_GROUP_ID] => 1
    [PRICE] => 13629.00
    [CURRENCY] => RUB
    [TIMESTAMP_X] => 18.08.2015 10:58:15
    [QUANTITY_FROM] => 
    [QUANTITY_TO] => 
    [BASE] => Y
    [SORT] => 100
    [CATALOG_GROUP_NAME] => Розничная цена
    [CAN_ACCESS] => Y
    [CAN_BUY] => Y
)