[Scribus] Scribus 1.3.4 - Thanks and a pdf export question

[Philipp Klaus Krause]

I've just started creating a new document using Scribus 1.3.4 and
noticed the new bleed feature. Choosing A6 paper, 1mm bleed and 4-fold
layout everything looks perfect on screen.
However when I export a pdf I get each A6 page as an individual page in
the pdf (which is fine for a pdf intended for download). The printer
wants it as 4 logical pages per pdf with the bleed included. How can I
export such a pdf?

Philipp