I don't know. Sounds fishy to me. If that were the case, seeing as Chain of Memories was first released in 2004, then 2006 stage musical would not have been possible. Might be more a SE issue than a Disney issue. There was also a direct-to-video sequel in 2005 and an attraction that opened at Hong Kong Disneyland that same year as well. So... something seems off there to me. Maybe SE had to licence the use of the characters, even though they were the Disney-tized versions?