This section of the book implies that detailed parts of configuration, content and security can be selectively migrated to Nexus 3.
In fact that is not true anymore, due to the complexity that can entail. During initial upgrade testing and design, it was determined this level of flexibility was too error prone and potentially confusing for end users.
Now there are only two options:
- upgrade repositories and content ( and user accounts and associated security )
- Server configuration
The whole section of the book should be revised to match the current implementation.