First published by Money Metals here: https://www.moneymetals.com/news/2020/03/27/gold-traders-are-paid-not-to-redeem-comex-efps-001995

What the heck are those mysterious "exchange for physicals," the mechanisms by which contracts to buy gold on the New York Commodities Exchange are neither fulfilled by delivery on the Comex nor settled for cash there but transported for supposed delivery elsewhere?