In 1922 the Church still held the old understanding of salvation

from the website Whispers of Restoration

The Catechism Simply Explained, Canon Henry Cafferata, 1922

261. Is Baptism necessary for salvation?

Baptism is necessary for salvation, because Christ has said, "Unless a man be born again of water and the Holy Ghost, he cannot enter into the kingdom of God" (John vi. 5).

Hence one cannot be too careful about baptism, and a child should be baptised as soon as possible. If there is any doubt about the validity of baptism, the person must be baptised again conditionally. The priest in that case says, N., if thou art not baptised, I baptise thee in the name of the Father, and of the Son, and of the Holy Ghost. To make sure of their baptism converts to the Catholic Faith are often re-baptised conditionally. Baptism by water is a necessary means of getting to heaven. But our Lord has provided two other ways of getting to heaven, when actual baptism by water is impossible. They are known as the Baptism of Blood and the Baptism of Desire. The Baptism of Blood took place in the martyrs who proclaimed themselves Christians and were put to death for the Faith before they could actually be baptised. Our Lord's promise of the saving value of martyrdom is given in the words. He that loseth his life for me shall find it(Matt. 10:39). Even the infants who were put to death by Herod are honoured by the Church as saints. They were not baptised with water, of course; but, because they were massacred for our Lord's sake, they suffered martyrdom; they confessed Him, not by speaking, but by dying, as the liturgy says. Their feast (the Holy Innocents) is on 28th December.

The Baptism of Desire is an act of perfect love of God or of perfect contrition (see 293, 294) with a desire (at least implicit) to receive the Sacrament of Baptism. That the Baptism of Desire is valid for salvation is assured by our Lord's words: He that loveth me shall be loved of my Father: and I will love him(John 14:21). But, while the Baptism of Blood and the Baptism of Desire obtain for us the state of grace, they do not confer the character (see 253). Only the Sacrament of Baptism confers the character; and therefore it alone makes us members of the Church and able to receive the other sacraments.

http://www.catholicapologetics.info/thechurch/catechism/Cafferata.htm

Lionel: Here Canon Henry Cafferata in 1922 has said that the Sacrament of Baptism, 'it alone' makes us members of the Church.He means de facto this is the only way to be a members of the Church. Practically we cannot be members of the Church with the baptism of desire, baptism of blood and being saved in invincible ignorance.
He says,'But, while the Baptism of Blood and the Baptism of Desire obtain for us the state of grace, they do not confer the character'.Yes they are not visible and they cannot be given like the Baptism of Desire.

We can say that a person with the Baptism of Water and Catholic faith, is oriented to Heaven. But we cannot say that any particular person will go to Heaven, without the baptism of water but instead with invincible ignorance, through no fault of his own.

So in 1922 this Catechism still seems to be holding on to the old ecclesiology, the old understanding of exclusive salvation in the Catholic Church, with faith and the baptism of water.

The 1994 Catechism assumes invincible ignorance is an exception to all needing to be members of the Church for salvation.So we have the slogans to support the New Theology, like ' all who are saved are saved through Jesus and the Church', 'God is not limited to the Sacraments' etc.
The same mistake is there in Vatican Council II(LG 14) and the Letter of the Holy Office 1949.They assume that being saved in invincible ignorance refer to defacto and known people saved outside the Church and so are practical exceptions to EENS. So the conclusion is that not every one needs to enter the Church for salvation but only those who 'know', those who are not in ignorance, through no fault of their own.-Lionel Andrades