User blog comment:Aakver244/Time Remnant/@comment-3423279-20160706093741/@comment-25449165-20160708232647

1. Note that when Barry ran back to the past during the tsunami incident, he saw another one of himself. That was his time remnant during the timeline from before Barry ran back. Technically every time Barry time travels, a time remnant of him forms and stays in the timeline from where he jumped. So it wasn't that he didn't know how, he was wasn't aware of them at the time.

2. Again, Barry "jumps" into the new timeline after saving his mother. His time remnant stays in the timeline from where he jumped. So yes, Season 3 will feature A LOT of changes.