That’s how we defined so NRS URLs are also perpetual, so by convention the NRS resolver doesn’t accept links which don’t have a version, and the NRS container also is versioned, that way when you use an NRS URL with a version you can still access the verson of the FilesContainer was linked to before.
To update the NRS name automatically when updating a website/FilesContainer, you can use the --update-nrs of the files sync command in the CLI, which automatically updates the NRS name to link to the new version of the FilesContainer being synced/updated. This generates a new version of the NRS name. If you give it a try with a CLI you’ll see what I mean.