In retrospect, they really wouldn't have expected that to work.
The True Dweomer that brought the world back was mostly a matter of theory - even the choice to investigate it, as their ultimate final-resort defensive weapon, was controversial. Epic Wizardry is expensive even for princes.
At first, it wasn't even clear what had happened. From the perspective of the Returned - who are most of the population, gods, the world never recovered - they died in various horrible ways, and then woke up in what seemed to be their ordinary everyday life, except that there seemed to be some... extra things. Buildings (small, ugly ones) that weren't supposed to be there, people (strange, poor ones) who seemed incredibly confused. And not especially happy that in a lot of cases, the spell - however it had worked, which would probably puzzle wizards for hundreds of years - hadn't done a perfect job of preserving both the new and the old.
Happily, Raikoth is very good at solving problems when the solutions involve throwing really ridiculous amounts of magic and gold at the problem.
But there really is no putting back everything that was broken.
Nobody is exactly sure where Yara is or what they are doing, but it has become clear that they are not suited to be an Archmage any longer.
And so the most ancient and mighty Council of the Archmages, restored and reunited, is recruiting.