Thanks, I’m as curious as you, and I’ll report back if I ever get a chance to do the work. The client seemed all ready to go but is balking now, so the project looks dead again, at the moment. But I expect when properly implemented the new DB object will be much faster than the old one, and will finally allow this app to do what it was designed for. The biggest advantage will be the (virtually) unlimited 64-bit cache size.