Maybe, to some degree, but Cassandra and Amy were so reworked to where they're almost not recognizable to their previous forms, due to their new gimmicks and the general flashiness. I for one would actually hope that Hwang would not get such flamboyancy, because his style is more grounded like Mitsurugi and Sophitia, so I would think it would really require less work overall, unless they just completely lost his animation data from the Arcade Edition of SoulCalibur III. Thanks to FluffyQuack's digging, however, it seems pretty apparent to me that they still have, in-house, every animation that they've ever made, at some place or another.