Think about it. I read COIE, and at the end you can see that Earth-1 Superman is walking with Power-Girl (look out for it), Earth-One Batman is also there too. The surviving characters were seen on New-Earth, then somehow they disappeared. So I'm thinking that the SA Superman was merged and retconned into Pre-52 Superman.

@comicdude23: I already explained this in one of your other threads, but yes, everyone main incarnation of Earth One Superman has been simply melded into the next. Silver Age became Pre-Crisis/COIE. That version became Pre-52/Post Crisis and now we have New 52.