My grandfather has been writing a book as a Pages document, but he told me the other day that he suddenly wasn't able to edit the document. He thinks that this happened around the same time that he upgraded to the latest version of Pages.
When I went to take a look at the document, I saw something strange: the Pages document consisted of a series of embedded PDF documents containing the original text of the document. So the first page is a page-size embedded PDF with the file name "preview1.pdf", the second is "preview2.pdf" and each PDF has a page worth of text.
It's a very strange problem. He said this had happened to several of his documents and I opened a few to confirm it. Obviously, I could fix this for one document by copying the text in each PDF page and pasting them into a new Pages document.
But the bigger questions are: (1) how did this happen? and (2) is there a systematic way to fix this that doesn't require going through each document and copying each page's text manually?