What is the meaning of Lumen Gentium's "subsistit in" according to the Acta Synodalia of Vatican Council II?

In *Lumen Gentium* 8 we find the words, "*Haec Ecclesia [...] **subsistit in** Ecclesia catholica...*" ("This Church [...] subsists in the Catholic Church"). The *Acta Synodalia Sacrosancti Concilii Oecumenici Vaticani II* is a collection of all of the speeches, debates, and written submissions of the Council Fathers at Vatican II. For example, it is well known that "*subsistit in*" replaced the original formulation of "*est*" due to an intervention during the Council. ## Question: ## ---------- According to the *Acta Synodalia* of Vatican II, what is the meaning of "*subsistit in*"? What did the Council Fathers mean by *subsistit in* and why did they use this term to convey the relation between the Church of Christ and the Catholic Church? ---------- **Note: I am only interested in the interpretation of *subsistit in* with respect to the *Acta Synodalia*.** Strong answers will include insight into central discussions and debates that took place at the Council as well as the names of the parties who put forward various positions.