Hi CR
Yes, you can do this. Create an instance of Acrobat, then use the Open command, as follow:
global::Acrobat.AcroAVDoc avDoc = new global::Acrobat.AcroAVDoc();
avDoc.Open(@"path.to.xfdf.file","comment")
the xfdf file must have a reference to the PDF file.
now you can safe the "new" pdf file as follow:
global::Acrobat.AcroPDDoc pdDoc = (global::Acrobat.AcroPDDoc)avDoc.GetPdDoc();
pdDoc.Save((short)glboal::Acrobat.PDSaveFlags.PDSaveFull, @"path.to.new.pdf);
pdDoc.Close();
avDoc.Close();
This is pseudo code, I hope it helps
Cheers Harry