I have evernote on my iPhone. Last night I opened the app, and my phone was on airplane mode. In the preview of the note I saw everything I had last put in it, but when I opened it, it had reverted to a way older version of that note. When I got out of airplane mode, the problem still remained. This is a note that is my "brain dump" - I use it to capture ideas or tasks or to-dos, so It's prretty important I get the recent data back.