Thanks as always.
Yes, I need to upload multiple records, each with 1 photo. But not just a multiple photo upload within 1 record. The gallery uses a form of lightbox and each photo will have a title and a description. So each needs to have it's own unique id.
I'm not familiar with ADDT. But it sounds like PowerGallery might do what I am needing. At least I can pick it apart and see an example to add to my current galleries.
My guess is that it uses the update behavior like Eric described earlier. Since it's created using the same tools I have now. I might appreciate the complete solution for future projects.