I created a report that has one subreport and it is working (calculating) fine. I was asked to break the data down further, so copied this report, added a new group section and used the previous report as a subreport to display the new subtotals. For two of the groups, the calculation comes out wrong for example 59 instead of 55. All the other groups subtotals come out spot on. When I run the subreport standalone, it gives correct results for all groups.