[scribus] Export to PDF option Clip to Printermargins

[josfon]

Hello

I got this a two A5 document with a 3 mm bleed.

I want to export those documents to a PDF with clipping and cut to 
printermarges.
In both document the printer marges are set to zero.

Now I got two different pdf's.
One is clipped/cut to de printer marges that are set to zero.

The other one is clipped but has still a white margin of 3 mm around the 
document.
I cann't figure out how to get rid of that 3 mm margin.

Any suggestions?

Greetings Jos