In 1.0.5 and earlier, I was able to export a world directly to OneDrive for keeping backups. In 1.0.7 when I try to do this, the game crashes. If I had selected to overwrite an existing file, the file isn't changed after the crash. If I had selected a new file name a 0 length file is created before the crash.
We're unable to reproduce this issue. However, if it occurs, crashes are logged automatically.