I'm working in Indesign CC. I've worked on a layout over the last several days and have finished several pages on the same document. then suddenly after creating a low-res pdf in acrobat my documnet reverted back to the blank document that it was on March 11 at 10:58 am. I then went to my Time Machine's hourly backup and the documents in all of those backup folders have reverted to March 11 10:58 am as well. So the work is gone on my local disk as well as my backups. How could all the files revert to a past save both locally and on several backup folders all at the same time. and more importantly can it be recovered?
Are you sure you saved to the same folder?
If they're gone, they're probably gone for good. I make a habit of periodically saving a new version with a new name, usually each time I'm about to make a major change, or when I start a new editing session, so I have both an easy way to abandon a set of changes and a ready backup path in case of disaster.