I thought Knowing who is Black would explain it all,However I am now More confused.
What If the Zamasu of the goku time line isn't dead and is the Zamasu on that time line that changes the body with goku. Then he goes to the future with the ring and meets the Zamasu of the Trunks time line and they do a team. The Zamasu of the Trunks time line wouldn't be dead because goku was dead before and they didn't know wish.
This is episode # 60 of Dragon Ball Super.
If Black is Goku body with Zamasu soul and he killed Zamasu body with Goku soul after changing, what is Zamasu body still doing there? Would not it be Goku soul?
who Fu@*™ing is Black??? ((Explodes Mind))
Shout by Tiago LuzBlockedParent2016-10-02T19:23:10Z
Makes no fucking sense! How would future Zamasu even know about Goku, since he died of a heart attack years before his "mortals are evil" epiphany? This whole parallel universes thing is a huge mess when done carelessly.