I think I figured it out:
KDS was installed on a machine that currently had some "imported components" on it. Since it did, it named the category "Legacy User Components". I installed KDS on a clean machine and noted that the components I was interested in were not shown or installed. Then I remembered that the other machine had previous installations with imported components. Nothing to worry to about at the moment. These components seem to be functional.
Cheers,
Monte--