[Jon]

Sometimes I feel like x-cart has one person who understands and writes the variants code and he works to ensure his job security

Open include/search.php

FIND:

        foreach ($variant_properties as $property) {
            $fields[] = "IFNULL($sql_tbl[variants].$property, $sql_tbl[products].$property) as ".$property;
        }

Replace with:

        foreach ($variant_properties as $property) {
            if ($property != 'productcode')
            $fields[] = "IFNULL($sql_tbl[variants].$property, $sql_tbl[products].$property) as ".$property;
        }