A family of Microsoft relational database management systems designed for ease of use.
David,
I can help you with the truncation issue but I'm afraid you're out of luck with regard to an automated way of exporting the Notes field RTF. The only way to maintain the RTF of the Notes field is to manually copy task by task from the Notes tab of the Project Information window.
Now if you can live without the formatting but still need to export the Notes field text without truncation, take a look at the following Wiki article.
Hope this helps.
John