protected function _copyStaffelpreis($sOldId, $sNewId)
    {
        $sShopId = \OxidEsales\Eshop\Core\Registry::getConfig()->getShopId();
        $oPriceList = oxNew(\OxidEsales\Eshop\Core\Model\ListModel::class);
        $oPriceList->init("oxbase", "oxprice2article");
        $sQ = "select * from oxprice2article where oxartid = '{$sOldId}' and oxshopid = '{$sShopId}' " .
              "and (oxamount > 0 or oxamountto > 0) order by oxamount ";
        $oPriceList->selectString($sQ);
        if ($oPriceList->count()) {
            foreach ($oPriceList as $oItem) {
                $oItem->oxprice2article__oxid->setValue($oItem->setId());
                $oItem->oxprice2article__oxartid->setValue($sNewId);
                $oItem->save();
            }
        }
    }