Noticed a Typo in the CD Booklet

My great-grandma died in January, and my grandparents found an ANJ CD while going through her things. I finally got it and noticed that they forgot to mention Hayley in The Last Rose Of Summer! She’s mentioned in every other song she appears in, but I guess they just forgot her in this one.

Méav does actually have a solo rendition of this on her CD A Celtic Journey that I would highly recommend checking out, though!

Has this typo appeared on anyone else’s copies of the CD?

I’ve seen things like that happen before and I’m always confused as to why? 😂, but I think my questions are more on the side of what songs they consider “duets” and which ones they consider solos. I see this mainly on 20, Tara and Meav are both credited for Lay Your Head Down, however Tara has the same level of involvement (in my opinion) on A Stór Mo Chroí and that’s considered Muirgen’s solo. So I wonder if they’re often mistakes made on the graphic design side of things or just a slightly odd way of categorizing the songs, though I have zero musical training so I don’t know if there’s actual differences between them.