Death Records Now

If the below texts are true, then how did the priesthood leave the earth?

THE
DOCTRINE AND COVENANTS
OF THE CHURCH OF JESUS CHRIST OF LATTER-DAY SAINTS
SECTION 7
Revelation given to Joseph Smith the Prophet and Oliver Cowdery, at Harmony, Pennsylvania, April 1829, when they inquired through the Urim and Thummim as to whether John, the beloved disciple, tarried in the flesh or had died. The revelation is a translated version of the record made on parchment by John and hidden up by himself. HC 1: 35–36.
1–3, John the Beloved shall live until the Lord comes; 4–8, Peter, James, and John hold gospel keys.
1 And the Lord said unto me: John, my beloved, what desirest thou? For if you shall ask what you will, it shall be granted unto you.
2 And I said unto him: Lord, give unto me power over death, that I may live and bring souls unto thee.
3 And the Lord said unto me: Verily, verily, I say unto thee, because thou desirest this thou shalt tarry until I come in my glory, and shalt prophesy before nations, kindreds, tongues and people.
4 And for this cause the Lord said unto Peter: If I will that he tarry till I come, what is that to thee? For he desired of me that he might bring souls unto me, but thou desiredst that thou mightest speedily come unto me in my kingdom. (D&C 7:1-4)

THIRD NEPHI
THE BOOK OF NEPHI
THE SON OF NEPHI, WHO WAS THE SON OF HELAMAN
CHAPTER 28
Nine of the Twelve desire and are promised an inheritance in Christ’s kingdom when they die—The Three Nephites desire and are given power over death so as to remain on the earth until Jesus comes again—They are translated and see things not lawful to utter, and they are now ministering among men. Between A.D. 34 and 35
1 And it came to pass when Jesus had said these words, he spake unto his disciples, one by one, saying unto them: What is it that ye desire of me, after that I am gone to the Father?
2 And they all spake, save it were three, saying: We desire that after we have lived unto the age of man, that our ministry, wherein thou hast called us, may have an end, that we may speedily come unto thee in thy kingdom.
3 And he said unto them: Blessed are ye because ye desired this thing of me; therefore, after that ye are seventy and two years old ye shall come unto me in my kingdom; and with me ye shall find crest.
4 And when he had spoken unto them, he turned himself unto the three, and said unto them: What will ye that I should do unto you, when I am gone unto the Father?
5 And they sorrowed in their hearts, for they durst not speak unto him the thing which they desired.
6 And he said unto them: Behold, I aknow your thoughts, and ye have desired the thing which John, my beloved, who was with me in my ministry, before that I was lifted up by the Jews, desired of me.
7 Therefore, more blessed are ye, for ye shall never taste of death; but ye shall live to behold all the doings of the Father unto the children of men, even until all things shall be fulfilled according to the will of the Father, when I shall come in my glory with the powers of heaven.
8 And ye shall never endure the pains of death; but when I shall come in my glory ye shall be changed in the twinkling of an eye from mortality to immortality; and then shall ye be blessed in the kingdom of my Father. (3 Nephi 28:1-8)

Also, I am wondering why there are no reports of these 4 still being alive, but thats another question.

It didn’t need to be, but as Josephs story grew, something had to be done, thus his convenient "revelations".