If you decrease the content level (say, go from "ui+runtime" to "runtime"), modules already installed are not automatically
re-installed (to reduce storage). You simply click the Finish button to close the dialog, and platform/station operation is otherwise unaffected. However, if you later re-install existing
modules, or install new modules, the new content filter level is applied--typically with resulting savings in storage space.
So, if "freeing" storage space is the goal when restricting module content, after changing the content level, you should re-install
existing modules. Do this using the Software Manager.