Программное добавление цен в зависимости от кол-ва. Не выводит цены при редактировании товара в админке

$productPrice = function ($productId, $qfrom = null, $qto = null) {
   $res = CPrice::GetList([], [
     'PRODUCT_ID' => $productId,
       'QUANTITY_FROM' => $qfrom,
      'QUANTITY_TO' => $qto,
     'BASE' => 'Y',
     'CATALOG_GROUP_ID' => 1
   ]);
   return $res->Fetch();
};

$updatePrice = function ($productId, $price, $currency, $qfrom = null, $qto = null)
      use ($productPrice) {
   $data = [
     'PRODUCT_ID' => $productId,
      'PRICE' => $price,
      'CURRENCY' => $currency,
      'QUANTITY_FROM' => $qfrom,
      'QUANTITY_TO' => $qto,
     'BASE' => 'Y',
      'CATALOG_GROUP_ID' => 1
   ];
   return ($rowPrice = $productPrice($productId, $qfrom, $qto))?
      CPrice::Update($rowPrice['ID'], $data):
      CPrice::Add($data);
};

$res = $updatePrice($productId, '3000', 'RUB', 1, 10);
var_dump($res);

$res = $updatePrice($productId, '1000', 'RUB', 11, null);
var_dump($res);

// check
$res = CPrice::GetList([], [
  'PRODUCT_ID' => $productId,
  //'QUANTITY_FROM' => 1, 'QUANTITY_TO' => 10
]);
while ($row = $res->Fetch()) {
   print_r($row);
}

int(2201)
int(2203)
Array
(
    [ID] => 2201
    [PRODUCT_ID] => 2285
    [EXTRA_ID] => 
    [CATALOG_GROUP_ID] => 1
    [PRICE] => 3000.00
    [CURRENCY] => RUB
    [TIMESTAMP_X] => 15.09.2015 09:25:37
    [QUANTITY_FROM] => 1
    [QUANTITY_TO] => 10
    [BASE] => Y
    [SORT] => 100
    [CATALOG_GROUP_NAME] => Розничная цена
    [CAN_ACCESS] => Y
    [CAN_BUY] => Y
)
Array
(
    [ID] => 2203
    [PRODUCT_ID] => 2285
    [EXTRA_ID] => 
    [CATALOG_GROUP_ID] => 1
    [PRICE] => 1000.00
    [CURRENCY] => RUB
    [TIMESTAMP_X] => 15.09.2015 09:30:32
    [QUANTITY_FROM] => 11
    [QUANTITY_TO] => 
    [BASE] => Y
    [SORT] => 100
    [CATALOG_GROUP_NAME] => Розничная цена
    [CAN_ACCESS] => Y
    [CAN_BUY] => Y
)