Just happened to me, too!  2 hours of work are completely gone.  I DID NOT hit the button multiple times, as Zoe_H mentioned above.  I hit it once to undo a minor change and everything I've done for the past 2 hours vanished.  Uploading photos, changing links, writing copy, reformatting, coloring backgrounds... probably 200 steps were undone with a single click of the undo button.  Your system keeps saying it's auto-saving.  Where are those saved versions??  The redo button does not work.   PLEASE FIX THIS!!!  I am a contractor and bill by the hour.  I can't just tell them that I'm billing them for 2 hours of work that "I promise" I did, but that Constant Contact somehow mysteriously deleted.  I have to eat that cost now.     PEOPLE ABOVE HAVE BEEN REPORTING THIS FOR 7 MONTHS NOW.  PLEASE FIX AND DO MORE THAN TELL US NOT TO HIT THE UNDO BUTTON TOO MANY TIMES!! ... View more