There are quite a few hymns that have their choruses used in some hymnals apart from the full hymnal text. For example:
The Hymn: There's a peace in my heart that the world never gave
and its chorus: Constantly Abiding
Should the instances of the choruses be merged into the main hymn, or kept separately?
The same question goes for their tunes.
I have notices that in most cases they are separate, but in some they are merged.