Yeah it's more than likely missing import/export, but in my experience the editor your using now is very html based, it doesn't have the text document "feel" to it. Enter does what a linefeed would in html, not what it would do in a text document, etc.
Now of course it depends entirely on how much of the editor is actually there, and I seriously doubt it's much more than a basic rtf editor. It'd be very cool if it had tables support though.