When cleaning up a messy collection, your source files might not always have nice tags etc. so you don't always know how Picard matched a file. So for cases where you know the file name you are looking for, it would be nice if you could search for that file name to see how/where Picard matched it.

You can always use the File Browser view to just manually drag that file to a release, but then you don't know for sure if Picard maybe matched that file as part of another release.

For background see https://community.metabrainz.org/t/feature-suggestions-after-matching-a-huge-messed-up-folder/712286