Generate internal links when exporting multiple linked pages to PDF

Steps to reproduce on XWiki 14.10.2:

• Go to Sandbox page and open the export modal
• Choose the PDF format and select from the page tree all 3 child pages of Sandbox (besides the Sandbox page itself)
• Export with PDF with default options
• The Sandbox page has links to its child pages. Open the PDF file and click on those links.

Expected behavior: those links should scroll the PDF down to the print page where the child pages appear.
Actual behavior: those links are opened in the web browser, because they are external links

I'm keeping below the original description of the issue:

Hello,

I have a problem with pdf export extensions. I want to export multiple sites in a defined space which is no problem at all.
But it starts getting serious when I want to include links.

The &includelinks=1 for example works fine but it only includes the direct links to the website.

I need a possibility to change the links to the website to pdf intern links.
Can you see a way how this could work?

That means that I want to export for example a front page with links to other pages and export them as well and have an internal link to the pages below the front page in the pdf file .

Thank you in advance.

Kind regards