I also tried copying /var/lib/icinga2/api/packages_api
and /var/lib/icinga2/icinga2.state
from the config master to the secondary master, but the secondary is still trying to update the config on the master.
I think it’s also related, but haven’t yet figured out how to address it, but Icingaweb2 shows the active endpoint as the secondary master instead of the config master.