So the memory sealed Erichthonios reveals that pandaemonium survived the final days of the ancients and he was expecting to have to maintain it the entire time throughout the ages. The one we found in the aetherial sea wasn't the original, but a replica created by transmuting portions of Azys La around.

That begs the question. Where the heck is it? Did the sheer age of it mean everything inside of it like the phoenix die off? If not, are they still waiting there, hidden somewhere out there in the world?

If the catastrophes of the intervening ages lead to its destruction on the source as so many other ancient ruins what of the other reflections? We can assume that it was destroyed in the flood of light of the first, but what about others?