Now that I'm back on OS X Yosemite I was considering re-downloading OneNote and using it across iOS and OS X. Has anyone been using this app combination extensively? Have you had any problems, data loss, or syncing issues? Also, how do you do backups of OneNote notebooks? The export as PDF function didn't work properly if you had material outside of "normal" paper areas a few months ago so I was downing the Windows-only formats from OneDrive.com and saving them in a backup folder. Thanks.