pdns / BIND backend: Better "rediscover" documentation?

I'm running powerdns (authoritative) with the BIND backend as a slave
/ secondary. I needed to update the master / primary IP addresses,
preferably without any downtime.

I updated the "masters" configuration of the relevant zones in the
named.conf file, and did a "pdns_control rediscover". I was pleased
to see that the new master / primary IP addresses were picked up.

However, i couldn't find this documented anywhere. The "rediscover"
documentation at

    https://doc.powerdns.com/authoritative/backends/bind.html

simply says "Reread the BIND configuration file (named.conf). If
parsing fails, the old configuration remains in force and pdns_control
reports the error. Any newly discovered domains are read, discarded
domains are removed from memory."

Maybe add a sentence "Changes in primary IP addresses will be honored"
or something along those lines?

Steinar Haug, AS2116