Sorry! Somehow I have the folders in both Photo-Sort and Camera Roll, I don't remember how I did that. When I looked in PS Express ,and saw the folders, I assumed, I was looking at the Photo-Sort folders. My bad. I should have notice that. I just remembered how I got the folders into the camera roll. I made the folders in the My Pictures folder on the PC, then i synced them in iTunes back to the iPad. After some trail and error, it seems like the easiest way, if you have many folder and pictures, is to export all the folders from Photo-Sort, using the wifi export, into your My Pictures folder (on PC). Then go into iTunes iPad section and click on the Photos tab and select the Selected folders button and select the albums you just imported. Then sync to iPad.
Now, do your edits in PS Express till your happy with them. Delete the albums in Photo-Sort and re-import them from Camera Roll. Now, sort them again. Sorry I gave a bum steer. So, I guess from now on you will have to edit first, then import into Photo-sort.