I had just finished making a book in the book module, but hadn't yet saved it. I moved to a previous book I made last year as I wanted to check the font type and size on the spine for consistency, but when I went back to the book I had just made it seems to have been replaced with last year's book. I've changed module and gone back but that doesn't seem to have made any difference. When I click undo, the things it is undoing are the last edits from my book, but I can't find it anywhere! How can it know what i've done but not find it? Does anyone have any idea what might have happened, or how I might get it back? It was 150+ pages and i'm gutted to have lost everything I had done.
Many thanks Rob, lesson learnt the hard way! New version nearly complete. I'd been swapping between modules frequently as I made the book without issue - very annoying that it suddenly decided to lose it all at the last minute! Anyway, book saved on creation this time.