Keynote has developed an annoying nuisance behavior. Whenever I edit a document, the saved copy is automatically overwritten. As a result, many of my existing Keynote presentations are now corrupted, as I inadvertently changed things without realizing they would overwrite the saved copy.
How can we make this weird behavior stop???
MACBOOK PRO (RETINA, 15-INCH,EARLY 2013), OS X Mountain Lion (10.8.3)