Duplicate in cognos 8.4 crosstab

[Cognos8]

I am upgrading cognos 8.2 to cognos 8.4. in c8.2 it shows correct datA. but in c8.4 it shows duplicate data.i used automatic funtion in both.  numeric values also i am having.i heard some issue is thr in c8.4 in this duplication by setting the property. kindly reply ASAP

[Suraj]

In some cases you have to set the aggregate and rollup aggregation properties properly after upgrade.
It is report and calculation specific.