Can I recover files that have been removed from OneNote?

[WPCentral Question]

I went into OneNote just recently and all my files had been deleted/removed. I had been using my device just previously but did not go into the program, I left it to charge, came back and into OneNote and all my files are gone. I do not know if it takes time for them to come back or something along the lines of return, or if they will not. I can replicate some of the information but not all. Is there anyway possible to bring them back? I don't believe it was trying to sync or something like that, even if that works when the program isn't open, and I didn't interrupt anything or turned off the device. Is there anyway to recover the files?