69 In place of the rite called the "Order of supplying what was omitted in the baptism of an infant," a new rite is to be drawn up. This should manifest more fittingly and clearly that the infant, baptized by the short rite, has already been received into the Church. And a new rite is to be drawn up for converts who have already been validly baptized; it should indicate that they are now admitted to communion with the Church.
Source: Sacrosanctum Concilium (Vatican.va)