[Fedora-livecd-list] How to remove groups in second config?

Hi. (This is for the new changes to livecd-creator from git which uses two kickstarts.) Is there a way to remove a group which is defined in the first config (here livecd-config-base-desktop.ks) in the second config (here livecd-fedora-kde.ks)? My problem is that the language groups (e.g. @estonian-support) pulls also the kde language files (kde-i18n-Estonian) and koffice language files (koffice-langpack-et) in the livecd. And I am not able to remove them in the second config (e.g. -kde-18n-* or -kde-i18n-et). Any hint how to fix this? The language files are about 325 megs and that's to big for the cd. Sebastian