As I understand it, if I have less than 400 transactions in a three month period, then I am rated for defects over a twelve month period instead....correct?

That being the case, does anyone else think we should be able to create reports for DSRs for the previous 12 months?  The system only caters for the last three months, which means I can't check to see if the figures on my dashboard are accurate (I suspect they are not).  My dashboard projection shows six defects (well under the 2%), but my defect report only shows two.  The only thing that changed on the dashboard report this month was negs/neuts (I got a grey dot for postage time after the long weekend, although the buyer still gave me four stars?!?).  NOTHING has changed on my defect report since April ( 1 neg, 1 neut and an open dispute for INR which was closed the day after it opened because the item turned up).  How are we supposed to have any faith in this defect system if the various components of the system can't even line up? And what use as a performance management tool, is a defect report that never changes?