Persons who were originally found to be disabled under a State plan will be evaluated
                  under current Federal guidelines.
               
               If the recipient is found “not disabled” after the CDR evaluation process, evaluate
                  under the appropriate State plan using the medical improvement review standard (MIRS).
                  These conversion cases will be evaluated under the State Plan Criteria as well as
                  the Federal definition of disability.
               
               If the person's eligibility for disability benefits previously ceased because of substantial
                  gainful activity (SGA) prior to August 12, 1994, the Federal definition of disability
                  applies. The State Plan no longer applies.
               
               Some former recipients of APTD/AB who have been converted to Title XVI rolls may have
                  been determined to be disabled where DA/A was the only condition involved. Such individuals
                  may not meet the Title XVI Federal standards discussed above. However, under the conversion
                  provisions, their disability status is protected as long as they continue to meet
                  the definition of disability under the applicable State plan, even though they do
                  not meet the Federal definition of disability applicable to new claims.
               
               See Details:
               
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                           20 CFR 416.260, Special Provisions for People Who Work Despite a Disabling Impairment
                           
                         
                      
                   
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                           DI 21501.000, Title XVI – State Plans – Disability/Blindness