Not rlcarey, but if a court order says you are to deliver records for the last 10 years and you have them, then you will do so or face contempt charges. Your attorney can confirm that easily enough. If the applicable record retention requirement was 6 years and that's all you had, then you don't have a problem.
Read his comment and Kathleen's in tandem. Keeping records beyond the period the law requires you to keep them is just bad judgment. Banks should have a record retention and destruction program.
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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.