Тегированный кеш сбрасывается при работе с элементами

<? if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();



$cache_id = md5(serialize($arParams));
$cache_dir = "/tagged_post_likes";

$currentPostID = $arParams["POST_ID"];
/*
*   СЧИТАЕМ КОЛИЧЕСТВО ГОЛОСОВ
*/

$obCache = new CPHPCache;
if($obCache->InitCache($arParams["CACHE_TIME"], $cache_id, $cache_dir))
{
    $cacheArray = $obCache->GetVars();
}
elseif(CModule::IncludeModule("iblock") && $obCache->StartDataCache())
{
     global $CACHE_MANAGER;
     $CACHE_MANAGER->StartTagCache($cache_dir);
     //-------------------------------------
    //LIKE - положительно проголосовали
         $arSelect = Array("ID", "IBLOCK_ID", "NAME", "DATE_ACTIVE_FROM","PROPERTY_*");
         $arFilter = Array(
            "IBLOCK_ID"=>17,
            "ACTIVE"=>"Y",
            "=PROPERTY_POST_ID" => $currentPostID,
            "=PROPERTY_VOTE_VALUE" => "1",
         );
         $res = CIBlockElement::GetList(
            Array(), 
            $arFilter, 
            false, 
            false, 
            $arSelect
         );
         $res->NavStart();
         $votesCount = $res->NavRecordCount;
      
      $cacheArray['votesCountAwesome'] = $votesCount;
      
      
     //DISLIKE отрицательно проголосовали
         $arSelect = Array("ID", "IBLOCK_ID", "NAME", "DATE_ACTIVE_FROM","PROPERTY_*");
         $arFilter = Array(
            "IBLOCK_ID"=>17,
            "ACTIVE"=>"Y",
            "=PROPERTY_POST_ID" => $currentPostID,
            "=PROPERTY_VOTE_VALUE" => "-1",
         );
         $res2 = CIBlockElement::GetList(
            Array(), 
            $arFilter, 
            false, 
            false, 
            $arSelect
         );
         $res2->NavStart();
         $votesCount = $res2->NavRecordCount;
      
      $cacheArray['votesCountBad'] = $votesCount;
      
      
      $cacheArray['POST_ID'] = $currentPostID;
      
     //-------------------------------------
     $CACHE_MANAGER->RegisterTag('post_likes_'.$currentPostID);
     $CACHE_MANAGER->EndTagCache();

     $obCache->EndDataCache($cacheArray);
}
 else
{
     $cacheArray = array();
}

   $arResult = $cacheArray;


   // Подключить шаблон вывода
   $this->IncludeComponentTemplate();



?>