User blog comment:Menara/The Son of Sobek: The official PJ and Kane Chronicles Crossover/@comment-74.129.36.70-20130416020946

Hmm, I was thinking this happened while he was searching for Camp Jupiter, but since he mentioned that they lost pegasi, he would still have his memories. So this would be between the The Last Olympian and The Lost Hero. But I'm guessing that in the end some god/goddess wipes their memories, as they said they did with the Romans when they met.