Sure, but even in war there's always a chance of people escaping elsewhere before they're wiped out. I know it's at least speculated (if it's outright said, I'll find it) that the Amdapori people were able to "alter the fabric of existence itself." So if that is true, there would have been a way for some to survive. If they ever tell us how they sealed Diabolos, that would certainly help.
It's kind of Schrodinger's Cat right now until more is elaborated, which... with the direction they're going, I think they will be. I'm hoping for a HM version of the Lost City myself with more lore and all in the coming 3.x series. Don't fail me now, lore team...!
Edit: Yup, right in the quest text for Amdapor Keep is where mention of their power (or perceived power) was. "Once, the lost civilization of Amdapor thrived in the Twelveswood, her citizens wielders of powerful, yet forbidden magicks which could be used to alter the very fabric of existence." So assuming that's true, it could be reasoned that some might have teleported themselves out of the Twelveswood elsewhere to also escape the persecution anyone claiming to be mages/magic practitioners came into later during the Sixth Umbral Era.
It's kind of Schrodinger's Cat right now until more is elaborated, which... with the direction they're going, I think they will be. I'm hoping for a HM version of the Lost City myself with more lore and all in the coming 3.x series. Don't fail me now, lore team...!
Edit: Yup, right in the quest text for Amdapor Keep is where mention of their power (or perceived power) was. "Once, the lost civilization of Amdapor thrived in the Twelveswood, her citizens wielders of powerful, yet forbidden magicks which could be used to alter the very fabric of existence." So assuming that's true, it could be reasoned that some might have teleported themselves out of the Twelveswood elsewhere to also escape the persecution anyone claiming to be mages/magic practitioners came into later during the Sixth Umbral Era.