Glitch: After removing header & footers, random information also deleted.

After removing header & footers from my 70 page PDF document, random information throughout my document, like titles and text boxes, was also deleted.  Can consistently recreate problem.

Background info:

• All files were created in PowerPoint 2010 & 2013 and Word 2010 & 2013, then saved as PDFs.

Steps taken:

• add page numbers
• remove headers & footers

Workaround: Manually delete each page number or use 'update' feature.