How to add mordified pages back to original PDF file replacing/over-writing their old pages

[satimis]

Hi all,

I run PDFtK to extract certain pages on a PDF file;

Code: Select all

$ pdftk original.pdf cat 1 output page-1.pdf

$ pdftk original.pdf cat 5 output page-5.pdf

$ pdftk original.pdf cat 12 output page-12.pdf

$ pdftk original.pdf cat 28 output page-28.pdf

etc

After adding notes on them how to merge them back to the original PDF file to replace/over-write their old pages?

Please advise. Thanks in advice.

Regards
satimis