Official comment
@MATT W > It does that. Once you relocate the first file, provided the same "move" has applied to all the other missing files, it will automatically use that "move" to find the others.
If the multiple files have all been moved to different places, it can't automatically relocate them all.
An example would be two files:
X:\Music\Awesome Music 2015\Song 1.mp3
X:\Music\Awesome Music 2015\Song 2.mp3
...moved in the same capacity:
X:\Music\Totally Awesome Music 2015\Song 1.mp3
X:\Music\Totally Awesome Music 2015\Song 2.mp3
...and moved to different places:
X:\Music\Totally Awesome Music 2015\Song 1.mp3
X:\Music\Totally Horrible Music 2015\Song 2.mp3
The latter would not relocate Song 2 simply by using the tool to find Song 1.