Just one addition; if you run into issues with the character limit in Excel, you might want to consider using an XML file as the data source. You can export the WordPress articles directly from the database into XML. For example, with phpMyAdmin if the database is MySQL, or MariaDB.

Kind regards,
Lucas Vieites
P.S. If my reply helped you, please mark it as helpful or correct so other community members can benefit from this information.