Добавить в новое поле при выводе корзины.

foreach($arResult["ITEMS"]["AnDelCanBuy"] as $arBasketItems)

 
if (CModule::IncludeModule("iblock")) {
$item = GetIBlockElementListEx("1c_catalog", "139", Array(),
                    Array("NAME" => "ASC"), 1, Array("ID" => $arBasketItems["PRODUCT_ID"]),
               Array("PROPERTY_CML2_ARTICLE"));

             $item = $item->GetNext();
             echo '<pre>'; print_r($item); echo '</pre>';
}

<td class="cart-item-article"><?=$item[PROPERTY_CML2_ARTICLE_VALUE]?></td>

if (CModule::IncludeModule("iblock")) {
$item = GetIBlockElementListEx("1c_catalog", "139", Array(),
           Array("NAME" => "ASC"), 1, Array("ID" => $arBasketItems["PRODUCT_ID"]),
         Array("PROPERTY_CML2_ARTICLE"));

       $item = $item->GetNext();
       echo '<pre>'; print_r($item); echo '</pre>';
}