Once you have set a print default header, if you later wish to restore the system default header, you must complete the following steps. You cannot restore the system default header by deleting the print default header.
1. Go to the Custom Headers module, and click the Module Preferences button.
2. Click to display the current print default header in edit mode.
3. Click Ok (ALT+O) to display the Save Header dialog box. (You need to do this even though you haven't made any changes to the header.)
4. Deselect the Default check box, and click Save.