Superior Spider-man makes a deal with Mephisto to turn him back into Doctor Octopus, in order to defeat the Norman Osborn Spider-man from another dimension. In doing so, he loses all of his copied memories from Peter Parker during the first Superior Spider-man series. He has no recollection of Peter’s secret identity.
From – Superior Spider-man Vol. 2 #12
No recollection of Peter Parker’s identity… just pathetic. And does it even need to be said: it cannot work. Memories are interconnected through logic. He would simply work it out again.