Bob,
1 - If you upgrate the site to 3.1 , the exists gallery albums will be ignored. You need move the files , or change the GalleryFolder to each folder.
The old way is this , when you set GalleryFolder ="~/GalleryFiles" , and set AlbumID="Terry"
in the v3.1 , you can set GalleryFolder ="~/GalleryFiles/Albums/Terry" to prevent maintain the existing albums.
2 - AlbumID is removed. You need use GalleryFolder property for each user. for example , GalleryFolder ="~/Users/Terry"
3 - Now what you can download is the v3.1
4 - You can split the category on server side , for example , GalleryFolder ="~/Users/Terry/Album1", GalleryFolder ="~/Users/Terry/Album2"
but if you want to filter the photo in client side, you need modify the javascript code.
We will consider add that feature into javascript code in future.
5 - I am not sure when the documents will be finish. Maybe in 2 weeks.
Regards,
Terry