Maildir migration from Dovecot to Dovecot

[Marco Hofmann (XenAdmin)]

Hello everbody,

I'm a proud user of Dovecot 2.2.9 on Ubuntu 14.04 LTS. I currently 
migrate all my Linux services to a new Debian 8 Jessie Server. On this 
server I installed and configured Dovecot 2.2.24.

Now I search a way to migrate the two IMAP users I have on this server 
preserving all timestamps, folders and flags. Yes, only two ;-)
I read the following two articles:
http://wiki2.dovecot.org/Tools/Doveadm/Sync
http://wiki2.dovecot.org/Migration/Dsync

But I must say, that either these articles are not so good, or I act 
quite dumb.
I understand that I have to use "doveadm backup" against my old server 
to make a one sync with all properties of each mail.
What I miss are proper examples and that there are so many options, I 
could set.
But what confuses me most is the the configuration file in 
(http://wiki2.dovecot.org/Migration/Dsync) which I don't know how to 
reference?
Am I using the wrong guides, are the article someway misleading or is 
there anything else I'm overlooking?

Thank you so much!

-- 
Marco Hofmann
https://www.meinekleinefarm.net/
Twitter: @ZomboBrain