Well duh!
This is the paradox that I pointed out. There can't be multiple Revan's in SW history, or Exile's! Especially in Revan's case ending must be LS, as in DS Revan crushed the Republic, and we know that Republic was not crushed until movie era. I use word crushed, as Revan was canonized before K2. K2 changed this however, as both "versions" of Revan left to unknown regions.
Canonical characters are only for contiunity. You may still play all Kotors as you want