Вот так можно?
<?
AddEventHandler("iblock", "OnBeforeIBlockElementUpdate","DoNotUpdate");
function DoNotUpdate(&$arFields)
{
if ($_REQUEST['mode']=='import')
{
unset($arFields['CML2_LINK']);
}
}
AddEventHandler("iblock", "OnBeforeIBlockElementAdd","DoNotAdd");
function DoNotAdd(&$arFields)
{
if ($_REQUEST['mode']=='import')
{
unset($arFields['CML2_LINK']);
}
}
?>
<?
AddEventHandler("iblock", "OnBeforeIBlockElementUpdate","DoNotUpdate");
function DoNotUpdate(&$arFields)
{
if ($_REQUEST['mode']=='import')
{
unset($arFields['CML2_LINK']);
}
}
AddEventHandler("iblock", "OnBeforeIBlockElementAdd","DoNotAdd");
function DoNotAdd(&$arFields)
{
if ($_REQUEST['mode']=='import')
{
unset($arFields['CML2_LINK']);
}
}
?>