I haven't found a solution to this. I just try to keep everything insde the artboard.
The only way I can reproduce what you are experiencing is if I save out as an .eps and am not mindful of the Artboard check box on the save dialog. If you deselect this check box you will get all of the file content, if you select this check box you will only get the designated Artboard bounding area. But you never said what file format your are saving or what version of Illustrator you are using. I have to assume you are in CS4.
My apology - the original illustrator file was saved in version 11 as a native format and I save as version 13.
So I've tried the way you've described it and it worked.
If this worked or you Susan please masrk it as answered it will be helpful to others. thanks.