My comment was missed. I am curious what your answer to the general case would be.
Here is the more general and credible situation
Hypothetical situation:
In your pursuit of truth in Normative Ethics, you stumble upon a conclusion that you find morally repulsive. You fail to refute the argument (even with peer review) and you find yourself agreeing with the premises even as you find the conclusion morally revolting.
You now have the conclusion of a moral imperative that you happen to find morally disgusting. What do you do?
(You can use concrete examples if you wish. If the answer depends then explain why and how.)
now this is a conundrum. so this is like knowing the world is overpopulated, but still wanting to have kids?
or better discovering a cure or cancer and not releasing it, because the world is overpopulated?
also, a real world example, a man created a genome sequence that when spliced into rice, caused an enzyme to bond to spermatozoa, making it heavy and slow, so this rice would be given to poor countries so they wouldn't breed as fast. Is this genocide? a very polite eugenics? Is it moral to do? is it moral not to do?
how about something truly unsavory, lets say... murder, cold blooded killing of others, that we are brought up to believe is wrong. very few taboos exceed murder. lets say, you discovered that killing 'rich smart people' mathematically made the world a better place and equalized society by creating a more uniform distribution of wealth globally and a lack of greed among people. do you become a serial killer? create a disease of affluence? the dilemma, is do you follow your upbringing and instincts, or rational logical thought, without regard to moral implications.