The new entries should be named:
"User Manual" and "Admin Manual"
The new files contain basically the current documentation pdfs plus some new info.

Afaik the old documentation entries should disappear automatically when the pdf is not available at build but "More Documentation" needs to be removed.

The documents linked to are called:

VSD:
user-manual-vsd.en.pdf
admin-manual-vsd-en.pdf

user-manual-vsd.de.pdf
admin-manual-vsd-de.pdf

GPD:
user-manual-gpd.en.pdf
admin-manual-gpd-en.pdf

user-manual-gpd.de.pdf
admin-manual-gpd-de.pdf