My hard drive was erased which would usually be fine, but my to-do list is on a note that never syncs with my other devices and stays offline. This happens to a few of my notes, they just randomly never try to sync. Sometimes it seems like a particular note I tried to edit on one device and maybe had a note conflict, but for whatever the reason never see a note conflict, but rather it only appearing on my Macbook Pro desktop evernote, but never on my phone's app or the web app (same notes on these appear).