Can I import package list into new appliance?

After import Kiwi configuration in resulting archive i see file ‘config.xml’ with list of packages:

<packages type='image' patternType='onlyRequired'>
    <package name='wicked-service'/>
    <package name='libwicked-0-6'/>
    <package name='wicked'/>
    <package name='libyui-qt-pkg7'/>

Is it possible to use this file as template for new build? I would just like to rebuild on the basis of Leap 42.3 instead 42.2.