Welcome to BOL Emmett.
The customer has the same obligation to pay. No change on the customer's part. The change is in the loan classification internally. The lender feels like they may not get paid, so accruing interest would only inflate income earned on the general ledger. (Record it as income and charge it off when it's not paid.) Like Randy said, it is an accounting issue, not a customer payment issue.
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Integrity. With it, nothing else matters. Without it, nothing else matters.