I'm facing an issue with group header  and footer suppression.
i have two rows of data...the only difference between two rows is a flag column. one is having flag column value as zero and the other as one. i have to display data with flag 0 in main report and data with flag 1 in sub report.

GH Main: H1
Details main: D1
Footer main: F1

GH Sub: H1
Details sub: D2
Footer sub: F1

I tried to suppress the header, details and footer details with this column value
(ie. if({table.flag}=1) then true in main report and  if({table.flag}=0) then true in sub report).
While doing so. the details part is getting suppressed properly. But in main report, header is not displaying and in sub report, footer is not displaying. Please help in this.