Dear Rick,
Headers and footers have some common tags, so changing one may affect others.
Your template includes footers in the first DOCX, but they are hidden because the template uses <w:titlePg/> tag (tag shared by headers and footers) that hides the footer. The addHeader method removes it because this method is for documents created from scratch, not templates.
Please follow the approaches detailed in our previous email, there's no other way to change headers or footers in templates in the current release of phpdocx. The importHeadersAndFooters approachs work perfectly for your case.
Closed to avoid duplicated messages. The same is being sent by email.
Regards