A unique teaching or Mormonism that does not get taught much anymore is that righteous parents can save their lost/wayward children by their own good works. This teaching works as a great carrot to keep the older generation active and engaged as the younger generations fall away from the church.
There are several examples of this principle of salvation of wayward children being taught in General Conference. From Elder James Foust from 2003
“The Prophet Joseph Smith declared—and he never taught more comforting doctrine—that the eternal sealings of faithful parents and the divine promises made to them for valiant service in the Cause of Truth, would save not only themselves, but likewise their posterity. Though some of the sheep may wander, the eye of the Shepherd is upon them, and sooner or later they will feel the tentacles of Divine Providence reaching out after them and drawing them back to the fold. Either in this life or the life to come, they will return. They will have to pay their debt to justice; they will suffer for their sins; and may tread a thorny path; but if it leads them at last, like the penitent Prodigal, to a loving and forgiving father’s heart and home, the painful experience will not have been in vain. Pray for your careless and disobedient children; hold on to them with your faith. Hope on, trust on, till you see the salvation of God.”April 2003 Conference
The above is actually Elder Foust quoting Orson F. Whitney, which in turn is quoting Joseph Smith. Whitney gave the quote in the April 2029 General Conference. In 1992, Elder Boyd Packer gave the exact same quote.
Contrast this principle to Pres Nelson’s “sad heaven” talk of 2019. It seems he does not go along with the parents saving wayward children like Joseph Smith did. Pres Kimball said much the same thing in a 1974 Ensign article. First he quoted D&C 132:13 that says if it is not by God’s word it “shall be thrown down, and shall not remain after men are dead, neither in nor after the resurrection, saith the Lord your God.” Then he says:
How final! How frightening! Since we know well that mortal death does not terminate our existence, since we know that we live on and on, how devastating to realize that marriage and family life, so sweet and happy in so many homes, will end with death because we fail to follow God’s instructions or because we reject his word when we understand it.Temples and Eternal Marriage,” Ensign, Aug. 1974, p. 6
Also contrast Pres Nelson’s talk with a the First Presidency message in the Aug 2016 Ensign by Pres Eyring
A prophet of God once offered me counsel that gives me peace. I was worried that the choices of others might make it impossible for our family to be together forever. He said, ‘You are worrying about the wrong problem. You just live worthy of the celestial kingdom, and the family arrangements will be more wonderful than you can imagine.Aug 2016 Ensign, Eyring
When was the last time you remember being taught that you could save your children? Are we as a church worrying about the wrong thing? Will our family arrangements in heaven be more wonderful than we can imagine?