The non-business days configuration, which includes Federal holidays, is used only when calculating the release dates on check holds placed at the teller line or elsewhere.  It is not related to 7-day processing.

NOTE: Holds are released according to the release date on the individual Uncollected Funds record, regardless of whether daily processing is run on Sunday or not.  If an Uncollected Funds record has a release date that falls on a Sunday, the hold is released on Sunday.  This will work the same way with 7-day processing as well.  If you do not want holds to be released on Sundays, you can set your configuration so that the system calculates the release date to avoid Sundays (will choose the next available business date instead).  For more information, refer to the "How Check Holds Work" section of the Automated Deposit Holds booklet, available on our website and via the related link below.