Board Thread:The Flash discussions/@comment-9346948-20170510001536/@comment-24152851-20170519235918

Xandermcc wrote:

@Gracekim12 Well consider this, what if Barry just finds a way to defeat him that doesn't involve creating him? Savitar would never kill Iris in the first place. Problem with that is our good friends called, time remnants.

In this show. Even if you change the future and stop something from being created, their presence was already felt in the past and needs to remain in order for the current timeline to still exist. Eobard being erased from existence didn't bring back to life all the people he had killed like Mason Bridge.