Create a plugboard for epub that modifies save to disk with all the same settings as described earlier. In the content.opf file, you're looking to see that <dc:creator> was set to the adjusted value. Note that this will only affect an epub that has a 'Catalog' tag.
Also, note that you need to look at the .OPF file inside the EPUB, not the one that's in the folder. That .OPF is not modified.
Last edited by GRiker; 09-13-2012 at 06:45 PM.