Hi there,
I require assistance with how to attach an existing sitemap.xml to the JSitemap generated sitemap.

We are using Joomla 3.5.1 and have embedded an external system inside of Joomla (not iFrame). The content is displayed on the frontend as if it was a part of Joomla but Joomla has no knowledge of the other system.

The other system generates it's own sitemap already so we only need to join the 2.

I'm not sure where to start, i'm presuming we would add it as a datasource?

Cheers for you help
G.