[Podofo-users] Appending PDF: Embedded files of appended file not accessible in result pdf

[F. E. <exl...@gm...>]

Hello dear podofo users,

recently I experimented with merging multiple pdf files into one pdf using
the Append function of PdfDocument. It works like a charm with the pdf
pages and annotations, but I recognised that attached files (at document
root) of appended pdfs are not listed in the attachment table of my pdf
viewer (Foxit 8.0, didn't check other viewers I've got to admit). When
checking the size of my result pdf, it was clear that the embedded files
are still there somewhere, but I cannot access them it seems.

Is this the expected behaviour or did I stumble over a bug / missing
feature here? I think there might be a way to recreate the necessary
internal references, but I'm lacking the knowledge to do so. I could
circumvent this issue by manually extracting the embedded files (I know how
to do that) and adding them to the result pdf (trivial via AttachFile
function), but I don't know how to remove the embeeded files before
appending the pdf file.

Thanks in advance,
Frederik