Oh this is pure comedy. BA are absolutely strapped for long haul capacity and one would imagine jump at the chance of getting back a frame that they regret parting with in the first place. Because an original B777 isn't up to the spec of a new 200LR means it will still do sterling service on East Coast US routes or the similar routes that G-ZZZA / B / C still fly. I would imagine that VARIG have screwed this frame over quite badly to have it scrapped quite so young.
Gordon, the G-ZZZ sequence was supposed to resemble G-777 but with the first -200IGW version, it became G-VIIA, (7 in Roman numerals see,
clever )
Incidentally as the first 200IGW, G-VIIA WAS a Boeing test frame for over a year.