Sounds like the version she used in her Insta post was the end of the final edit of the song, with a different verse in the second half than the previews from the CMs. The extended CM version is just a mash-up of the original verse and the ending of the song. That`s usually how production goes, they produce different versions for on-air to accommodate the lengths requested by production companies.
After hearing the version from her Insta post, definitely more excited about this song
). Can`t wait to hear the full version
.