Because no postmap files are used - is it required to reload/restart the server daemons after
changing the 'postfix-account.cf' and/or 'postfix-virtual.cf' file?
Do both daemons (postfix + dovecot) need a restart or can a softer reload be used after config change?

Config files are changed without setup.sh (synced/uploaded), hence no setup.sh is involved
(that may perform additional action to ensure the new config takes effect).