So, when you are looking for your car keys and you find them your auditor would advise you to keep looking?
Once you can document the frequent large cash transactions requirement for the exemption process you are not required to make a catalogue of all large cash transactions. You can verify that with a call to FinCEN. If you want to review all of the customer's large cash transactions it is for a different purpose.
As an aside, any handmade list of transactions you use in support of exemption should be supported by copies of the underlying documents; i.e. an undocumented list will not be acceptable.
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.