Have they vanished from the text? Why do you assume they are the Temple of God? Could this be ( gasp ) another end run on making Israel the church or the church Israel?
Has not God always kept a remnant for Himself? Are not all saved, somehow, in Messiah? Can there be different roles for different groups saved in Christ over different times? What is this desperate need to remove Israel, however nicely, from God's economy and replace it with the church?
Could it actually be that there are complexities to this story that we don't see yet?
What will happen when the time of the gentiles ( and the church ) is fulfilled and God turns his attention back to Israel? The church is "done" but "all Israel will be saved"...where? In what group?
So many fun questions. No need to answer them, Rev. I'm tired, blathering, and we won't get to the bottom of it here. Love you, brother.