Hi there, the warning message does not go away, it keeps popping up even if you dismiss it.
Now I don’t think it is a serious issue for SEO for my sites, as I submit the latest sitemap that I create with the Google XML Sitemap to the Sitemaps section of Search Console, so this is the one that should be used by search engines.
However, I would appreciate it if you could provide an option with the next release to disable All-In-One SEO’s sitemap option – I would prefer more internal control over my sitemap setup.
I have to say that your plugin is my first choice for an SEO module, and have used it for many websites, always with excellent results – thank you!