I have started to use kOganizer Version 4.6.5 (4.6.5) it's super I am at the moment on UbuntU 11.04 & OpenSUSE 12.1. Before I used evolution 2.32.2.
The question I have is how can I import my calender from evolution to kOganizer?

Regards...............

Are you aware of where on your system Evolution stores your Calendar - and more importantly what format it is in?

Well when I do a back up of evolution calender files it askes me where I would like to put them save them. The format is tar.gz

Please post the output of "tar -tf <backup file name>". I suspect it will be ICS, in which case it will be compatible.