Hello, I am preparing to upgrade my current iRedMail 0.8.7.  I recognize that I will need to upgrade through each release (0.9.0 -> 0.9.1 -> 0.9.2).  We are currently using MS Active Directory for authentication.

When setting up iRedMail with Active Directory, there are a considerable number of config file edits that need to be made, as documented here:  http://www.iredmail.org/docs/active.directory.html

My question is, are those config file edits preserved during the upgrade process?  Or are they lost and need to be redone?

Thanks!

==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.8.7
- Linux/BSD distribution name and version: CentOS 6.5
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MS Active Directory
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? No
- Related log if you're reporting an issue:
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