One doesn't necessarily have anything to do with the other. If you are required to report HMDA, whether you are designated a Small Bank, ISB or Large Bank, you will still have to report HMDA.
I believe the only break you get with HMDA when you are an ISB is that you no longer have to Census Tract any properties outside of your MSA(s).
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God made the world in only 7 days... but he didn't have any paperwork.