My entry contains a word document. I want to edit this word document, Modify it and Replace it by Pdf Version with all the modification (by scripting)

So I can export the Document, modify it and convert it with Word automation, but I don't find a way to replace my old word version by the new PDF one. I was thinking to remove it then import my PDF...

Neither on EntryInfo or DocumentInfo I see a way to access the Electronic Document attached in order to delete it !

Thanks for your help.