Up the fog is correct except for what I assume is a typo....

Up the fog is correct except for what I assume is a typo. Auditors should have insisted on the deferred tax asset being partially or fully impaired based on there being sufficient doubt as to whether it will be used in future periods. It would therefore increase the operating loss after tax and reduce the asset on the balance sheet.
it is still available for tax purposes if ever necessary, but does not meet the accounting criteria of an asset on the balance sheet.