Old TV Show, Several Seasons Not Recognized

I have been moving my movies and TV shows form AppleTV/iTunes to Kodi.  The process has been going fine using Kodi’s built-in scraper, TMDB.  However, when I recently moved the old TV show “Have Gun, Will Travel” to Kodi, TMDB only recognized the first 3 seasons.  The remaining seasons don’t show up under TV Shows at all.  They do show up under the Videos/File tab.  Any advice on how to get seasons 4-6 to show up under TV Shows?