Nope. It ends with the fertilization. The evil of IVF is that it invites the born to dehumanize the unborn.
The remaining ones can be frozen in perpetuity, instead of being flushed, in order to satisfy moral obligations expected of us as a society.
How does wrongful perpetual imprisonment satisfy moral obligations?
I don't know about that. I ask again, what about the terminally ill, under life-support?