manipulating RPMS in package Selection Files

I have created a set of custom selection files. In the "+Ins" section is my master list of packages. Appended in the "-Ins" are packages I no longer want to install. When I install via autoyast, the packages listed after "-Ins" still get installed and do not get removed. Is there a better/smarter/right way to accomplish this? PURPOSE: I have users that do not want certain packages installed. By creating lists of those packages and appending them to the known default list, I expect autoyast to either not install them or to remove them. Thanks. -- Jean L. Francois