When user "set a bunch of pages to be hidden from the sitemap.xml file (those are functional pages not content pages) and published the sitemap in the app, the sitemap on the publish servers still show up unwanted urls.
This issue happen because currently we are storing "mgnl:googleSiteMapHide=true" in our 'website' workspace which means (s)he will have also to publish his/her affected pages along with sitemap updated info.
This cause SUPPORT-6194 happen. Would better if we also update our documentation about this.