3-m dash not appearing for subsequent author works

I am using endnote4 for mac, osx 10.6.4, and using a Chicago A (modified) style. My Word Doc and Endnote are both set to the same output style, and yet author names are still being listed even for subsequent entries. This has been driving me cracy trying to figure it out. Any help would be much appreciated. Also, I have to edit some of the bibliography entries because they are not proper Chicago format, and yet with each reformat, those edits are undone. Not sure how to make corrections so they will be permanent. Thanks for the help!