He said it May of 2004, after FSA was already released in Japan and like a month before it was released in the US, so saying they changed the story isn't a viable option. I have read the interview many times. This was before TMC was released, so obviously it would be the oldest tale at that time. The question was about FSA's place chronologically. He said that Four Swords was the oldest tale and that FSA was a "sequel" to that. I put sequel in quotes because it was in context of chronology.