I have a style that contains a bitmap bullet. If I create
drop down text on that style, using a style that has numbering;
when you view the drop down text in the compiled file it uses the
bitmap from the drop down link style.
If I understand you correctly you have created a bullet style
that uses an image and then applied that style to some text in a
drop down. You have then overridden the style by applying a number.
This being the case, you will find that the (image bullet) style
applied earlier is still referenced in the HTML code. This explains
why the bitmap still appears.
In this instance it is better to create a new numbered style
in your style sheet and apply this to the drop down text.