Below is the feedback from our Accounting Dept:
We use the Jack Henry RF report for this specific disclosure. We used to have a custom report that manually calculated the amount, but that was stopped when we did our core conversion to Jack Henry in 2013.
I do know that we had a parameter setting issue prior to 2016 that somehow excluded non-interest bearing accounts. Jack Henry adjusted this parameter in 2016. At the time it was documented as being changed through the RFMENU Option 3 Regulatory General System Parameter Maintenance, then selecting Uninsured Deposit Limits (also available through the CFPAR menu option 80). This is obviously a very different problem, but it might make sense for Mission Bank to look at the settings to determine if they make sense.