Crosstab variances after upgrade to version 10.2

[darners]

We have just upgraded from version 8.4 to 10.2 and are currently going through testing of all reports.

Most of our reports are fine, but we have one that doesnt seem to be bringing back all of the data

Simple grouped crosstab, counting distinct Employee numbers

Report specifications are the same (as per lifecycle manager)

Datasources are the same

Was wondering if anything had changed with crosstabs between 8.4 & 10.2

Does anyone have any experience of this or is it a PMR to IBM

Cheers