Item information in a sourcing project

When selecting an item in a sourcing project, a pop-up window appears where some information of this item are displayed.

Is it correct that the information that is displayed is the one from Sourcing project / Items / Attributes or is the information taken from another place?

When I rename the attributes there (for example makeorbuy of itemsubclass) the changes can be seen in the table but not in the pop-up window. This look like there is another place to chance or is there a bug?