I think you hit the nail on the head long ago, Eileen. Having brought all these registrations through several PSR and Tyros keyboards, there's been ample opportunity for corruption. Traditionally, I've always loaded earlier registrations on a new keyboard and just tweaked them with the new voices. For the most part, it has worked but a few things have gone wrong, causing wide-spread unwanted results like I'm seeing now.
After Christmas, I have a lull. I'm going to log all my registration details and rebuild them from scratch. That will solve my problem. Meanwhile, thanks for all your help along the way 😀! That goes for everyone too!