Comment on WP Autoblog Plugin Support by Glenn Shimabukuro.
I modified the file, “sitemap-mutlisite.php”, per your instructions and uploaded it to the /wp-content/… Talian 05 theme folder.
Refreshed the MPP Blog, and though it appeared to rebuild the sitemap, the sort did not change to alpha by blog name. I even changed the sitemap page to the default page template, updated it, then reselected the “MultiSite SiteMap” page template … and no luck.
Did I miss a step?