There are a number of threads in which there are a lot of photos. I really didn't look at those threads before I became a moderator, but those threads have prompted me to start really looking through the book From ABBA To Mamma Mia. From what it says about Just A Notion in the book's introduction, it sounds like they actually completed recording Just A Notion. I was under the impression that they never completed recording any of the songs in ABBA Undeleted, aside from Just Like That, and "Baby" becoming Rock Me. Did they, in fact, complete the recording of those songs, does anyone know?
CMP says on "The Complete Recording Sessions" that the track was "almost finished" (p.80), and according to Wikipedia "Just A Notion was intended to be released in full on the 2010 Voulez Vous Deluxe Edition but for some unknown reason it was not included".