Here are my tips in case you want to replace Pardus by another KDE-OS, in this case its's Mageia.
My presumption is that you have a separate system and home partition.
At installation make sure that the system partition / is formatted and the home partition /home is not formatted
.This last one is very important
After the installation make the following changes in the media sources of MCC.
- Remove DVD image.
- Enable Nonfree mirrors + Nonfree Updates.
- Enable Tainted mirrors + Tainted Updates.
Install (set category to All)
(new Wiki) will take care of Kmail transformation.