romanrite.com/instruction of May 2004 has more about this change in the Instruction
Cardinal Mahony
Cardinal Mahony has written that he will allow priests in his diocese not to follow the Instruction Redemptionis Sacramentum.
The Instruction was published by the Vatican on 23 April 2004. It included:
"[106.] However, the pouring of the Blood of Christ after the consecration from one vessel to another is completely to be avoided, lest anything should happen that would be to the detriment of so great a mystery."
Cardinal Arinze concluded this Instruction with "All things to the contrary notwithstanding." The instruction says that Pope John Paul II "ordered it to be published and to be observed immediately by all concerned".
But Cardinal Mahony has written: "Because our practice has become an Archdiocesan custom of over seven years, with both the Catholic faithful and the ministers accustomed to this practice, I am willing to grant exceptions to no. 106 of Redemptionis Sacramentum for legitimate reasons, such as the following: where the altar table is too small to accommodate many chalices, thus creating a greater danger for spillage; and where the number of chalices is so large that they would visibly detract from the important sign of One Bread and One Cup, as well as increase the danger of tipping over the chalices."
According to the-tidings.com it was issued on 4 September 2004. It was published on the internet on 10 September.
By J.R. Lilburne, 11 September, 2004. Updated 25 September 2004. I give what I have written on this page to the public domain.
Cardinal Mahony's article " The implementation of Redemptionis Sacramentum"
CNS "Vatican says wine must be put in chalices before consecration" 19 May 2004