P: End Page Layout in the Lightroom Book Module

I recently developed a Book in the Lightroom Book Module.  I accidently deleted the beginning end page which is not numbered directly after the cover sheet.  I was told that if deleted, I could not modify the page to reconstruct the end page.  This could be an issue when sending to Blurb to print.  I recommend that in future updates to Lightroom Classic the beginning and end page templates should be available in the event one accidently deletes these templates.