Moving photos out of Instant Upload album

There seems to be an issue on Google's side preventing users from moving photos that reside immediately under the "Instant Uploads" albums.

Until Google fixes this issue, the is a simple workaround: when tapping on the Instant Uploads album, choose "Subfolders" from the "Show" prompt:

Then, locate the correct date-based sub-album and move the photo from there.

For those technically inclined, I posted the detailed explanation of the issue on Google Picasa Web Albums API group: https://groups.google.com/forum/?fromgroups=#!topic/Google-Picasa-Data-API/NRue29DnL6s .
Hopefully, someone from Google will take a look at it.