Correct.
The reason they dislike Trump is not what you'd expect, either. His talk about building walls and banning people from certain Middle Eastern countries is what bothered them.
Why?
Because Mormons have an extreme sensitivity to anyone who is exclusionary, due to their own history of being excluded. Therefore, anyone who takes the position of, "Group X needs to be kept out of this country" pisses off the Mormons.
However, Mormons also are so overwhemingly conservative that most can't bring themselves to vote D.