Hi, I'm Gerlinde from Germany. Right now I finished an article about LDS and Transgender. Unfortunately in German. But this quote is in English and from the church Handbook of Instructions (Issue 1999, Vol. 1):
Church leaders counsel against elective transsexual operations. If a member is contemplating such an operation, a presiding officer should inform him of this counsel and advise him that the operation may be cause for formal Church discipline. Bishops refer questions on specific cases to the stake president. He may direct questions to the Office of the First Presidency if necessary. (p.113, PDF)
Persons Who Are Considering or Have Undergone a Transsexual Operation
Persons who are considering an elective transsexual operation should not be baptized. Persons who have already undergone an elective transsexual operation may be baptized if they are otherwise found worthy in an interview with the mission president or a priesthood leader he assigns. Such persons may not receive the priesthood or a temple recommend. (p.43, PDF File)
To me, this is clear with it:
Somebody gets to know the Mormons, and he or she want to be baptized and plans moreover a sex change surgery, he or she may not be baptized. But, if somebody has already done this step and is legally changed, he or she must undergo embarrassing interviews with the mission president or a bishop/Stake president which for their part may not decide, whether this person is baptized. Because only the prophet of the Mormons may this decission in Salt Lake City.
This procedure has led to the success, she he or she must learn that they are only 2nd class members of the Mormons, since certain rights are refused to them.
With biological women who are actually men, this means that they will never get the priesthood of the Mormons. And applies to both that they may never enter a temple. Completely being silent for neither the baptism of the dead nor the Endowment of one's own of a sealing to partners and/or children.