Kinda reminds me of a scenario I ran into and discussed on the forums here Songs released as singles on one platform, compiled with previous singles on another platform: same or separate release groups? - MusicBrainz / Style - MetaBrainz Community Discourse
In that case since the focus was on the new song and the rest of the songs in the release were old songs, I decided that labeling the new release as a separate single was the best solution.