update.sh not updating configuration

[fbusse]

Updating from 0.5.2 to 0.5.3 (as well as the updates before), update.sh tells the user that it updates the configuration:

$ ./bin/update.sh
WARNING: Replaced config options:
(These config options have been replaced or renamed)

• 'imap_root' was replaced by 'imap_ns_personal'

Do you want me to fix your local configuration? (y/N)
y
. backing up the current config files...
. writing /srv/webmail/config/main.inc.php...
. writing /srv/webmail/config/main.db.php...
Done.
Your configuration files are now up-to-date!

However, that is not true:
$ grep imap_ns_personal conf/*
$

The main.inc.php is identical to the backup main.old.php

[alec]

How about now? Works for me.