The Petach concludes with the remark that at the end of the entire cycle i.e., at the end of time as we know it, there will be a complete Tikkun that would be based on everything that was done, good or — God forbid — bad.
That alludes to what was said above  to the effect that right and wrong will continue to exist in the course of history — as represented by the earlier statement in this Petach that nothing either good, bad, or a combination of the two is even forgotten before His Throne of Glory — until God’s will to bestow goodness will hold sway, His Yichud will be revealed, and everything will achieve perfection.
The thing to recall is that all of this plays itself out and functions in the Attik realm, the subject of the previous section which is being expanded upon in this section.
 See Petach 30.
(c) 2014 Rabbi Yaakov Feldman
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