My uninformed guess is the mammoth and modern elephants are one and the same. Take african elephants, place them in a cooler climate and after a few generations they will appear to have more body hair.
Like the feral pigs. They are what, into two generations now of being wild, and they have long hair and long incisors.
Kind of like taking humans and giving them clothes for an extended period of time and they start to look less hairy?
I think you are right. I read another article that said the plan is to have an elephant carry the embryo to term.
I’m OK with it as long as they don’t start talkin T-Rex. :-)