Forum:KB:Did the Sith species originate on Dromund Kaas or Korriban?

Did the Sith species originate on Dromund Kaas or Korriban? Both planets are cited as the original home in their respective articles. One version claims the Sith went from Dromund Kaas to Korriban, but another version says that the Sith species only gained space travel after defeAting the Rakatan's attack on Korriban.