Conflicting Values?

I just merged the two instances of lets_just_praise_the_lord into the three instances of lets_just_praise_the_lord_gaither; it's the same song, and since the Gaithers are not competing with any other lets_just_praise_the_lords I don't see any reason to put their name on the text authority; in fact, it makes me wonder if we're raising Bill or Gloria into the Godhead. (Lord Jesus, I'd like you to meet my friend Lord Gaither...) But I was told that certain fields had conflicting values and I needed to choose which to keep. The publication date was easy, but the firstLine posed a problem, namely that I can't see any difference that could be called a conflicting value. Even the apostrophes look the same shape. Here's a screenshot of the purported conflict.