Sometimes, you want more that just a single level of pages when using the Sitemap content element. In the past, you’d create a bunch of Sitemap content elements using a sub page menu type or even manually create your sitemap in HTML.
The easy solution is to add a TypoScript template with the following TypoScript into it’s Setup section. Then in your Sitemap content element, use Menu type Sitemap, and set a Starting point.
tt_content.menu.20.2.special = directory
See the accompanying pictures for more details.
If you put the above TypoScript in your root template, your normal full-site sitemaps will stop working. You can put the following TypoScript into a Template Setup section on your full-site sitemap pages to get them working again.