Well, the option is not really update only those things which have changed. It's update only those things with "missing" information. So I chose the option to update all files instead. That didn't help either, the long names still are displayed. I have always had the "remove" option checked.

If I right-click and check the properties of a file, I can see on the Details tab a Description category with a Title field and it contains the long name. So I guess since Mezzmo can see that, it's overriding the file name. Understandable I guess. Is there an option to override that?