I created a gallery and imported pictures from a folder.
They imported just fine.
my php settings prohibit script execution over 30 seconds, so I had to import them in batches.
when I finished with the first batch of 60 photos, I filled in descriptions and titles and excluded a few. I saved it. They saved just fine. After importing the rest of the photos, now 266, I can no longer save descriptions or titles for those files after the initial import.