When you are adding the code to the editor are you adding in all of this formatting? If you are adding in the formatting in the editor make sure you click on the source button so you add to the source.
In your db what is stored for this record? If you see the exact same thing as you see on the page then it would indicate that there may be some extra formatting occurring in your display page. If you continue to have problems with this please post back and include a copy of the code you are using to display this value as well as a copy of the code on your insert page for the HTML Editor instance. I can check these for any extra formatting that may be causing this problem.