Archaeology Event - upgrade kits

[Super Catanian]

If the scrolls have not been used up, can it be saved to next event? Or every event will start over again?

Event Currency that hasn't been used by the end of said Event is permanently lost and is not recovered in any re-run of the Event. I learned this the hard way; last year, I forgot to spend my 200-ish Scrolls at the end. While I still maxed out my World's Fair (take that, barra!), I was pretty salty about it for a bit.