Even though your claim may say "closed" doesn't always mean that they are completely through with your claim. And it doesn't necessarily mean that you will have an AB8 letter. The IU may be deferred pending exam. Now, I haven't followed your claim, but did you have an IU exam? Case in point; my claim closed but I had 4 deferred items...Back, Cervical spine, Headaches and IU. I was awarded with payment on June 1, 2012. I then had C/P exams on July 20, 2012 for back, cervical spine and headaches, And on July 30 I had an IU exam. After this portion of my claim is complete I should see my AB8 letters. On ebenefits it is showing "Gathering of Evidence." I hope this info gives you some hope and relieves some stress. Good Luck!