de-booking

[freelander]

Пожалуйста, помогите перевести.

Слово встречается в следующем контексте: "Recognizing the potential disservice to stakeholders that the “de-booking” of proved
bitumen reserves could have as a consequence of a lack of a generally recognized approach to the determination of an appropriate year-end bitumen price, Canadian Securities Regulators took action."

Заранее спасибо