I uploaded a PDF to a Tizra Document, entered all the metadata, but now I need to make changes to the PDF. What should I do? After you make your changes to the PDF, if you upload the newly-changed PDF to the Document and that newly-changed PDF has THE EXACT SAME NAME as the Document's existing PDF, the new PDF will: replace the existing Document PDF and do the following: • Replace the existing Document PDF and update its uploaded date/time stamp • Leave all metadata as-is • Overwrite any changes you may have made to the Document's Table of Contents within Tizra.