Yes, there should be standard accounting practices and disclosure enforced in this arena. Without the relevant information informed decisions on stock value can not be made with any certainty. There are several reasons why the company might do this.
One is to manipulate stock prices, perhaps encouraging equity investment where a prudent investor would not act given more information, the second is to manipulate the income statements either for purposes of taxability, or in order to acquire debt. When accountablility is not enforced, and the information not provided on the resale of previously written off inventory, then the danger of 'insider trading' increases, because the information is only available to a limited audience.
