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$rsItems = \CIBlockElement::GetList($arSort, $arFilter, $groupParams, $pageParams, $arSelect);

$arElementLink = array();
$elementsID = array();


while ($arElement = $rsItems->GetNext())
{
   $result[] = $arElement;
}

if (!empty($result))
{
   foreach ($result as $key=>$item){
      $result[$key]["PROPERTIES"] = array();
      $arElementLink[$item["ID"]] = &$result[$key];
      $elementsID[$key] = $item["ID"];
   }

   $arPropFilter = array(
      'ID' => $elementsID,
      'IBLOCK_ID' => $arFilter['IBLOCK_ID'],
   );

   \CIBlockElement::GetPropertyValuesArray($arElementLink, $arFilter['IBLOCK_ID'], $arPropFilter, []);

   foreach ($result as $key => $arItem)
   {
      if (!empty($arItem['PROPERTIES']))
      {
         $arProperties = [];
         foreach ($arItem['PROPERTIES'] as $pCode => $arProperty)
         {
            if (
               (is_array($arProperty['VALUE']) && !empty($arProperty['VALUE']))
               || (!is_array($arProperty['VALUE']) && strlen($arProperty['VALUE']) > 0))
            {
               $arProperties[$pCode] = \CIBlockFormatProperties::GetDisplayValue(
                  array('ID' => $arItem['ID'], 'NAME' => $arItem['NAME']), $arProperty, '');
            }
         }

         if (!empty($arProperties))
         {
            $result[$key]['PROPERTIES'] = $arProperties;
         }
      }
   }
}