I'm assuming it's because of the change in placement of defend and skill causing a loss in a button press. A new one will need to be found

The RNG system in EO3HD works differently than it does in DS. An RNG manip route will have to be made from scratch. You can always try the old eo3 route without rng manip if you want to do a run atm https://docs.google.com/document/d/1mjejFkXadDffLDLWYwI3OPJOjXoqQCNKs6KP0J0viAo