(Azcentral) - The Phoenix Diocese will stop offering consecrated wine for Communion at most Masses, a change considered one of the most fundamental to Roman Catholic Church customs in decades. A diocesan statement said the change was being made based on Bishop Thomas J. Olmsted's understanding of the church's new translation of the Mass, called the General Instruction of the Roman Missal, and other church documents. However, no other diocese in the country is known to be following suit, the U.S. Conference of Catholic Bishops told The Arizona Republic.