Problem in product cost drilldown reports

Hi, I need some help.

My problems is the following.

In my system I have 2 controlling areas.

In OKTZ two cost component structures are defined - C1 for CO area 1000 and C2 for CO area 2000.

I have created drilldown reports for both in KKO0.

When I save in OKN0 the control parameters Cost component structure C1 to be default, the reports in Controlling area 2000 are not filled with data as they use CCS C2.

Could someone give me an idea what can I do?

Thanks in advance! 😊