Membership and advancement (and now activity logs) are different things.
Scoutnet is being phased out. I believe that depending on the program and type of member, the membership data is in different databases. Scoutbook is not the official BSA membership record database. It is the advancement database. I doubt that the council is entering data into Scoutbook. The copying of membership data into Scoutbook is a background process.
My understanding is that in 2017 existing units in Scoutbook needed to sync the members data once in order to copy the official membership data to Scoutbook
For membership, if your council has authorized it, many new members can be registered via the online registration system. Some member registration must be done by the council professional staff.
The following 2017-2019 roadmap plans may help folks to understand long-term planning impacted by chapter 11 restructuring and COVID-19: