Board Thread:Theories and Speculation/@comment-32617252-20180317055942/@comment-34678409-20180319052655

I actually liked what Lorenzo stated. Normally, if an Uchiha transplants another Ms into their eye, they get that person's abilities. But if there's a special connection like being blood related, a unique evolution occurs. That's probably why you don't see an EMS retain the other person's abilities.