NULL value in list of values in Web Intelligence prompts

Hi all,

In BO 3.1, null value is not displayed in list of values in Web Intelligence prompts even though it is displayed in Universe Designer. So, for instance, we cannot select companies which do not have parent company. In some previous version, the null value was displayed.

Is it a new bug or a new feature? )

Thanks in advance.

Regards,

Dmytro