After looking through the backups, the scratchpad contents seem to have fallen prey to file corruption and were truncated. Unfortunately, our backups don't reach back far enough in time to make recovery possible.

I've recovered the data in the same database storage page which was not picked up by the database anymore but which was clearly at one time part of your private scratchpad.

Again, I'm sorry for not detecting the corruption and for the loss of your data, even if some of it could be recovered.