Аналог

problem.php

<?
// Частное лицо
AddEventHandler("sale", "OnOrderSave", "OnOrderSaveHandler");

function OnOrderSaveHandler($ID, $arFields, $arOrder, $isNew)
{
    if($arFields['PERSON_TYPE_ID'] == 1)
    {
        $arOrderPropVals = array();
        $db_vals = CSaleOrderPropsValue::GetList(array(), array('ORDER_ID' => $ID, 'ORDER_PROPS_ID' => array(19, 15)));
        while($arVals = $db_vals->Fetch())
        {
            $arOrderPropVals[ $arVals['CODE'] ] = $arVals;
        }

        $PRIVATE_PERSON_ID = 32;
        $ar = CSaleOrderProps::GetByID($PRIVATE_PERSON_ID);
        if($arOrderPropVals)
        {
            $PRIVATE_PERSON_VALUE = 'Частное лицо (' . $arOrderPropVals['FAMIL']['VALUE'] . ' ' . $arOrderPropVals['CONTACT_PERSON']['VALUE'] . ')';
            $arNewProp = array(
                'ORDER_ID' => $ID,
                'ORDER_PROPS_ID' => $ar['ID'],
                'NAME' => $ar['NAME'],
                'CODE' => $ar['CODE'],
                'VALUE' => $PRIVATE_PERSON_VALUE,
            );

            Bitrix\Sale\Internals\OrderPropsValueTable::Add($arNewProp);
        }
    }
}

solve.php

<?
\Bitrix\Main\EventManager::getInstance()->
        addEventHandler("sale", "OnSaleOrderSaved", "OnSHandler");

function OnSHandler(Bitrix\Main\Event $event) {
    global $DB;
    #https://dev.1c-bitrix.ru/api_d7/bitrix/sale/events/order_saved.php
    $order = $event->getParameter("ENTITY");
    $values = $order->getFields()->getValues();
    $value = $values['PERSON_TYPE_ID'];
    $value_id = $values['ID'];
    if ($value == 1) {
        $arOrderPropVals = array();
        $db_vals = CSaleOrderPropsValue::GetList(array(), array('ORDER_ID' => $value_id, 'ORDER_PROPS_ID' => array(19, 15)));
        while ($arVals = $db_vals->Fetch()) {
            $arOrderPropVals[$arVals['CODE']] = $arVals;
        }
        $PRIVATE_PERSON_ID = 32;
        $ar = CSaleOrderProps::GetByID($PRIVATE_PERSON_ID);
        if ($arOrderPropVals) {
            $PRIVATE_PERSON_VALUE = 'Частное лицо(' . $arOrderPropVals['FAMIL']['VALUE'] . ' ' . $arOrderPropVals['CONTACT_PERSON']['VALUE'] . ')';
            $arNewProp = array(
                'ORDER_ID' => $value_id,
                'ORDER_PROPS_ID' => $ar['ID'],
                'NAME' => $ar['NAME'],
                'CODE' => $ar['CODE'],
                'VALUE' => $PRIVATE_PERSON_VALUE,
            );
            $strSql = "INSERT INTO `b_sale_order_props_value`
              SET `ORDER_ID`=" . $value_id . ",
             `ORDER_PROPS_ID`=" . $ar['ID'] . ",
             `NAME`='PRIVATE_PERSON',
             `VALUE`='" . $PRIVATE_PERSON_VALUE . "'
              ON DUPLICATE KEY UPDATE `NAME`='PRIVATE_PERSON',
              `VALUE`='" . $PRIVATE_PERSON_VALUE . "';";

            $res = $DB->Query($strSql, false, $err_mess . __LINE__);

            // Bitrix\Sale\Internals\OrderPropsValueTable::Add($arNewProp);
            file_put_contents(
                    "/home/bitrix/ext_www/host.svarbi.ru/event.log2"
                    , print_r($arNewProp, true), FILE_APPEND | LOCK_EX
            );
            return $res;
        }
    }
}