how to test without yast

Hi, I have still problems understanding the results of merging mutible configurations. As far as I know combining classes is supposed to be a merge between different classes of only one member of a class each. merge Software/nagios.xml <-------> Network/primergy.xml I use a class 'Software' and have several xmls, nagios.xml, vmware.xml, base.xml e.g. residing in the corresponding directory. Unfortunately the packages and scripts section will be merged althought I use the dont_merge element. To understand the way of merging it is helpfull to test without a complete installation process. How can I achive that using xsltproc e.g. ? p.s. I dont want to use yast for a test