Hi !
I found a couple of already reported bugs regarding an incorrect rendering when printing to a file. I'm not sure my problem isn't a dupe but I still open a new bug since it focuses on 'pages per sheet' printing option and not directly on border issues.
Also, as a note, the vocabulary used here to describe the problem may differ slightly since I'm using a localized kde (not -en then), sorry about that…

Reproducible: Always

Steps to Reproduce:
1. Open some pdf file and chose to print it with option: Options → Pages → 6 pages
2. Printing to a file (pdf)
3. Select an output file & press the print button

Actual Results:  
The rendered document still contains one page per… page, and looks just the same as the original one.

Expected Results:  
The rendered document is expected to contain 6 pages at once. As a comparison, evince reach producing this «compressed» document.