Bates numbering not retaining when doc uploaded to PDF Expert via iTunes




I am having an issue with the bates numbering being retained in a document when it is uploaded to PDF Expert via iTunes.  I am syncing iTunes on my Desktop to an iPad and dragging and dropping the appropriate folder into the PDF Expert app .  The bates numbering is added and the document is saved into a folder or on to my desktop.  The bates numbering is retained when I view the document via Dropbox.

I would be very grateful if someone had an ideas about how I can deal with this issue.

With thanks.