Sadly, for me at least, the data for my site was lost. Multiple copies, all useless bits. So I’ve set up a new WordPress site. Never again will I try Drupal, thank you very much. It was too complicated, required maintenance, and seems to have eaten my data. That’s not entirely fair, but it did contribute to the problem, making recovery much more difficult. Hopefully I can recover some history, bit by bit, over time.