Cognos 10.2 Report Studio - Drill through Definitions issue

[MeanMac]

Hi,

I'm using Cognos 10.2  and having issues with the drill through defintion.. heres the senario:

In Cognos 10.2 Report Studio

Main Report (List Report)  Drills to child Report (List Report) using any one of  mulituple "Drill-through Definition"  each Drill-through defintion uses 10 Parameter Values and 2 Data Items,  I'm having a issue with 1 of the Data Items

Adding  "Data Item 1"  to one 1 drill through definition everything works, Main Report, Drill Through and Child. report

But by adding  "Data Item 1"  to more than 1 drill through definition it causes the Main Report to blank.

Any idea why this would be happing.. (I've noticed that the main report it now includes an
Sum Intersect mdx statement but I not found the soluition yet.) :( :o