Edita is right here. It may sound strange, but you must learn the facts as given in the study materials, even where they are out-of-date.
The UKBA and UFI have advised that you shouldn't be asked any questions on material that is out-of-date. However, at this stage so much of chapters 2-6 is out-of-date that there isn't much left to be asked!
You can get more guidance on this, and the many other facts that are out-of-date from this link - www.lifeintheuk.net/outofdate.
Remember, the official advice is learn the text as reproduced, even if it is clearly wrong...
George
www.lifeintheuk.net