I lost over 100 cards :( – Flashcards* Review

Okay, so I update to IOS 7.1.2 right? Next thing I know, I lose over 100 flash cards. I almost had 200 on a deck and now I'm back to 67. Can somebody please help and fix this? I really don't want to remake all those Flashcards.
Review by Benjoy64 on Flashcards*.