So, I've created a book in Lightroom (the book module really is terrible isn't it?) and uploaded it to Blurb. I've done that about 8 times now, over various weeks and months and even ordered one of the resulting books. If you know the module, you know you pick the kind of Blurb book you want. Can you upload the same book in different formats (say, softcover and hardcover) by just changing that one option in Lightroom? Does Blurb recognise it as the same book in a different format automagically?