Cite a group II onset date decisional deficiency involving a reopening issue when
the case contains the prior folder from the last adjudicated unfavorable determination,
there is sufficient evidence in file to establish the onset date, and the adjudicating
failed to reopen the prior determination when they should have, or
reopened the prior determination and established the onset date within the previously
adjudicated period when they should not have.
Included in this category is the situation when the adjudicating component either
correctly reopens the prior determination but establishes an incorrect onset date,
or incorrectly fails to reopen the prior determination, regardless of whether the
adjudicating component establishes the correct onset date.