Originally posted by popmarter:[..]
Those Popmart gigs in South America that were broadcast were part of covering the costs of bringing the tour there, at the time U2 had no sponsorship so bringing the production there costs them a fortune McGuinness talks about it in the book "U2 Show" they probably didn't release any of them because they specifically filmed Mexico for commercial release and anyway they are up on YouTube if fans wanna watch them.