Complex sentence: It is never stated which of the Twelve Colonies was Baltar's home; however, the original script states that he was from "Orion," but as this did not make the final version, its canonicity is debatable.
Split into simpler sentences: It is never stated which of the Twelve Colonies was Baltar's home. The original script states that he was from "Orion", but as this did not make the final version, its canonicity is debatable.