CIBlockCMLImport::ImportPropertyEnum

function ImportPropertyEnum($arProperty, $arEnumXmlNodes)
{
	$arEnumMap = array();
	$arProperty["VALUES"] = array();
	$rsEnum = CIBlockProperty::GetPropertyEnum($arProperty["ID"]);
	while($arEnum = $rsEnum->Fetch())
	{
		$arProperty["VALUES"][$arEnum["ID"]] = $arEnum;
		$arEnumMap[$arEnum["XML_ID"]] = &$arProperty["VALUES"][$arEnum["ID"]];
	}

	$i = 0;
	foreach($arEnumXmlNodes as $arE)
	{
		if(
			$arE["NAME"] == $this->mess["IBLOCK_XML2_CHOICE"]
			|| $arE["NAME"] == $this->mess["IBLOCK_XML2_CHOICE_VALUE"]
		)
		{
			$arE = $this->_xml_file->GetAllChildrenArray($arE);
			if(isset($arE[$this->mess["IBLOCK_XML2_ID"]]))
			{
				$xml_id = $arE[$this->mess["IBLOCK_XML2_ID"]];
				if(!array_key_exists($xml_id, $arEnumMap))
				{
					$arProperty["VALUES"]["n".$i] = array();
					$arEnumMap[$xml_id] = &$arProperty["VALUES"]["n".$i];
					$i++;
				}
				$arEnumMap[$xml_id]["CML2_EXPORT_FLAG"] = true;
				$arEnumMap[$xml_id]["XML_ID"] = $xml_id;
				if(isset($arE[$this->mess["IBLOCK_XML2_VALUE"]]))
					$arEnumMap[$xml_id]["VALUE"] = $arE[$this->mess["IBLOCK_XML2_VALUE"]];
				if(isset($arE[$this->mess["IBLOCK_XML2_BY_DEFAULT"]]))
					$arEnumMap[$xml_id]["DEF"] = ($arE[$this->mess["IBLOCK_XML2_BY_DEFAULT"]]=="true") || intval($arE[$this->mess["IBLOCK_XML2_BY_DEFAULT"]])? "Y": "N";
				if(isset($arE[$this->mess["IBLOCK_XML2_SORT"]]))
					$arEnumMap[$xml_id]["SORT"] = intval($arE[$this->mess["IBLOCK_XML2_SORT"]]);
			}
		}
		elseif(
			$arE["NAME"] == $this->mess["IBLOCK_XML2_TYPE_LIST"]
		)
		{
			$arE = $this->_xml_file->GetAllChildrenArray($arE);
			if(isset($arE[$this->mess["IBLOCK_XML2_VALUE_ID"]]))
			{
				$xml_id = $arE[$this->mess["IBLOCK_XML2_VALUE_ID"]];
				if(!array_key_exists($xml_id, $arEnumMap))
				{
					$arProperty["VALUES"]["n".$i] = array();
					$arEnumMap[$xml_id] = &$arProperty["VALUES"]["n".$i];
					$i++;
				}
				$arEnumMap[$xml_id]["CML2_EXPORT_FLAG"] = true;
				$arEnumMap[$xml_id]["XML_ID"] = $xml_id;
				if(isset($arE[$this->mess["IBLOCK_XML2_VALUE"]]))
					$arEnumMap[$xml_id]["VALUE"] = $arE[$this->mess["IBLOCK_XML2_VALUE"]];
			}
		}
	}

	$bUpdateOnly = array_key_exists("bUpdateOnly", $this->next_step) && $this->next_step["bUpdateOnly"];
	$sort = 100;

	foreach($arProperty["VALUES"] as $id=>$arEnum)
	{
		if(!isset($arEnum["CML2_EXPORT_FLAG"]))
		{
			//Delete value only when full exchange happened
			if(!$bUpdateOnly)
				$arProperty["VALUES"][$id]["VALUE"] = "";
		}
		elseif(isset($arEnum["SORT"]))
		{
			if($arEnum["SORT"] > $sort)
				$sort = $arEnum["SORT"] + 100;
		}
		else
		{
			$arProperty["VALUES"][$id]["SORT"] = $sort;
			$sort += 100;
		}
	}

	$obProperty = new CIBlockProperty;
	$obProperty->UpdateEnum($arProperty["ID"], $arProperty["VALUES"], false);

	return true;
}