Everything I place in the Documents folder is automatically deleted after a short time, maybe a couple hours or so (Not sure, haven't timed it.). I don't even know where to begin to troubleshoot this. Googled around a bit, and found nothing exactly like this.
It's the regular Documents folder in 8.1, not the SkyDrive. Speaking of which, I've tried both settings for "Automatically save documents to SkyDrive", on and off. Same issue happens.
Whatever other details are needed, I'll try and provide.