Has happened on two different occasions, weeks apart. Running Word for Mac 15.34 on OS 10.11.6, (newest OS my old MacBook Pro allows). I create a doc, save it as usual. Upon reopening, my new text is gone and the document contains the contents of an older, unrelated Word document. Worse, if I am unaware the text has been replaced, and I attach the weird doc to an email, as I did yesterday, it's empty--zero bytes. Zero, even though, on my desktop, it shows as, say, 84 KB and contains the unrelated text. It's been hell to lose m work this way. Anyone?