When the process doesn't require the formal revocation, the only thing that should matter to an examiner is whether your bank has consistently filed CTRs after you have internally canceled the exemption. Any examiner who tries to argue that you should file the revocations either doesn't understand that it's not required, or is simply trying to create a kerfuffle, which is ultimately a waste of everyone's time.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8