https://www.si.com/wrestling/2019/09/03/chris-jericho-aew-world-title-belt-stolen
Apparently, Jericho left the AEW championship in his limo while he ate at a Longhorn Steakhouse and when he came back it was gone. Hilarious for Jericho (BTW, they have to turn this into a storyline with his new challenger, right?). Sucks for AEW though. Those belts aren't cheap to make and that's a financial hit they didn't really need.