newsupernova/vendor/magento/data-migration-tool/etc/opensource-to-commerce/map-stores.xml.dist

<?xml version="1.0" encoding="UTF-8"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<map xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="../map.xsd">
    <source>
        <document_rules>
            <rename>
                <document>core_store</document>
                <to>store</to>
            </rename>
            <rename>
                <document>core_store_group</document>
                <to>store_group</to>
            </rename>
            <rename>
                <document>core_website</document>
                <to>store_website</to>
            </rename>
        </document_rules>
        <field_rules>
            <ignore>
                <field>core_website.is_staging</field>
            </ignore>
            <ignore>
                <field>core_website.master_login</field>
            </ignore>
            <ignore>
                <field>core_website.master_password</field>
            </ignore>
            <ignore>
                <field>core_website.visibility</field>
            </ignore>
        </field_rules>
    </source>
    <destination>
        <field_rules>
            <ignore>
                <field>store_group.code</field>
            </ignore>
            <transform>
                <field>store_group.code</field>
                <handler class="\Migration\Handler\StoreGroupCode" />
            </transform>
        </field_rules>
    </destination>
</map>