Changing the past

[Frederick35]

Perhaps memories about changed events in past will be erased, because it's impossible to remember events what newer happened.

 

[PaulaJedi]

If you change the past, do your old memories before you changed it get erased?

I am an eye witness to the fact that if the future changes your past, you will still remember time before the change. So, I vote no, they do not.
Can't prove it scientifically, though. I agree with Classical about how you change the past as well.