upgrade issue- c8.2 to c8.4

[Cognos8]

i have created list report. which has 6 coulmns. one column has only 2 distinct row( comparator and
selected).so i made to display as 2 columns.value display like
comparator    separator
0      100   
100      0

so it is coverted as in cognos 8.2 as below

comparator    separator
100      100

when i upgrade this in to cognos 8.4 it shows  duplicate as below.Is there any property do i need to change to avoid this. auto group summarize is 'Yes'.

comparator    separator
100      100
100      100