Yes. If you have an outstanding balance due amount with the IRS, they use your refund to offset that amount, up to the amount you owe. If your refund amount changed due to filing an amended return they will adjust your account accordingly. If your overpayment (refund) went from $3,300 to $2,800 the IRS will only apply $2,800 towards the amount you owed. You don't need to take any action.
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