I’m using Multisite WordPress for most of my WordPress sites. I’m also using Nginx, so the .htaccess files don’t do me any good.
My sitemap.xml files seem to be overwriting each other in the host site folder, so the sitemap.xml for this site may show as one of the others, I presume based on which one was updated last.
I’ll have to figure that out later.
… Some time later: Oh, what I said is happening, but WordPress puts the sitemap in as “wp-sitemap.xml” in the robots.txt file, and WordPress serves the appropriate sitemap file there no matter what the root sitemap.xml file is currently.