Automatically Update an XML Schema/Map

I have an XML Schema that is being used for an XML Map in an excel worksheet I have. However, recently I wanted to add a tag to the Excel worksheet and therefore a tag to the XML Schema. It’s a really large data sheet and I really don’t want to have to re-map everything. However, it seems like this is my only path forward because I can’t find a way to automatically update the Map when the Schema has an element added to it.

Is there a way to avoid having to re-map the entire file when I add an element and instead just map that new element only?

Thanks!