Look at what the scope of work was agreed upon...did you ask for a comprehensive review of record retention of required loan documents? Silly, since nothing you can do to fix it, but maybe that is what was requested in the scope of work. I agree it was a waste of time, just guessing on why they would have even looked at a 12 year old loan for documents connected with the origination of the loan.
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* My opinion is not necessarily that of my employer.