Mql5 signal started long after its history

Im quite new here but i wondering how the signals work.

How is this possible

The signals are started 2013.02.19

But the history i going back to 2012.07.18

Maybe i missed something =)

Started means: the signal was created. Signal was started (connected to thye service), not trading in Metatrader. Account had some history before the signal was started/connected for the first time.


Aha ok thanks.
https://www.mql5.com/en/signals/4432#!tab=history&page=5