Complex sentence: Although still an elite IRB referee, Barnes was not selected to referee any mid-year Tier 1 internationals in 2012, but was one of the officials present at the Pacific Nations Cup in Japan.
Split into simpler sentences: Although still an elite IRB referee, Barnes has not been selected as part of the panel to referee a Tier 1 summer international for 2012. Instead he will be one of the officials present at the Pacific Nations Cup in Japan.