Hi Michael,
Once you set the target, you need to tell the Fade cue what to do with
it. So you need to set a new audio level for it to fade to. Right now,
you just have a Fade cue that's targeted to an Audio cue, but doesn't
do anything to it. Just click on one of the level sliders or matrix
mixer fields to enable it for the Fade cue, and set the new level you
want to fade to.
Let us know if there's anything else we can help with, and have an awesome week!
-Andy