Their live stuff is not so common, so anything works for me.

But I think I know what you mean...but then I heard their live shows were very elaborate productions and sometimes I wonder if they used a backing track live. Not sure though. The liner notes show this:
Tracks 8, 12: , Australian Tour, March 1977
Tracks 1 to 6, 11, 13: Wembley Arena, November 1979
Tracks 7, 9, 10, 14: Dick Cavett Meets ABBA, April 1981
1 Dancing Queen 3:42
2 Take A Chance On Me 4:21
3 I Have A Dream 4:23
4 Does Your Mother Know 4:09
5 Chiquitita 5:21
6 Thank You For The Music 3:39
7 Two For The Price Of One 3:31
8 Fernando 5:24
9 Gimme! Gimme! Gimme! (A Man After Midnight) 3:16
10 Super Trouper 4:28
11 Waterloo 3:29
12 Money Money Money 3:19
13 Name Of The Game / Eagle 9:36
14 On And On And On 4:01
I love the tour they were on when they filmed ABBA: The Movie in 1977. I have that movie on blu-ray and really love it. Live n Concert is good too....but that In Japan DVD is ridiculous. I didn't like seeing ABBA like that. Jugglers and spazzy dancers performing in front of them....plus the lip-syncing to most of the tracks. Boo.