The fact that reopening is limited by the 1- and 2-year rules does not mean that revision
                        is likewise limited once a determination is reopened. This is particularly true when
                        some time has passed between the effective filing date of an application and the initial
                        determination on the application. If the affirmative action in writing falls within
                        the 1- or 2-year period, and revision is appropriate, you should revise all months
                        that are incorrect, back to the effective date of the application.
                     
                     
                        EXAMPLE: An individual files an application with an effective date of March 15, 2000, and
                           the initial determination (i.e., notice) is issued on September 30, 2000, and it is
                           an initial determination for March 15, 2000 through October 2000. On September 16,
                           2002, we receive new and material evidence that the individual had income in larger
                           amounts than they made us aware of from the application date through September 15th.
                           Because the September 30, 2000 initial determination is within 2 years of the September
                           16, 2002 affirmative action in writing date, we are permitted to revise the initial
                           determination of September 30, 2000 and correct the income amounts back to the effective
                           date of the application, March 15, 2000, even though that date occurred more than
                           two years before the affirmative action in writing date. We can then make an overpayment
                           determination for the same period.