How do I find memopad data that is missing?

im using bb curve 9320 since 2012 (ver 7.1 bundle 1319) n a loyal bb user since 2008.. my save memo in my memopad is missing and show no data @ a title of the save memo.. in options it show 70 number of entries but i can't find it anywhere in the bb.. im sure im not accidentally delete all the memo and still hope there will be a way to get all the memo back because lots of important notes in there.. tq for the help