Migration from Kolab server 2.1 to 2.3.4

[Florian Evers]

Hello,

I have an old outdated Kolab server 2.1 here, which is based on the "native 
Kolab for Gentoo Linux" project that was cancelled some time ago. Thus, I 
avoided to update the system at all costs, but now it is time to create a new 
installation.

The good thing first:

On the kolab server, there is only _one_ user account, that's me. This user 
has:

* Some mail folders
* Contacts
* Calendar

Now I need your advice how to proceed. I have the idea to install the current 
Kolab server on a different machine, create a new user there (me) and then 
somehow migrate all mails, contacts and calendar information to the new 
account.

Regarding mail this seems easy: Drag & Drop all mails within Kontact/KDE 
should do the job. But how do I migrate all the contacts and the calendar 
entries? If I remember correctly these should be "just" mails as well, but 
hidden by the "Kolab KDE resource".

Is it sufficient to just copy & paste all Mails from the old RAW-IMAP account to 
the new one, and activating the Kolab resource afterwards? Or do I run into 
problems with some metadata hidden in each Mail / the database / the LDAP 
server?

I reall hope you can help me. Thank you very much in advance!
Florian