Pivot table / Use of "Calculated Item"-formula causes proble

[geert808]

I am using a Pivot table which has all divisions listed by Group.(rows) The division should only be listed for a certain group if there's a link between them in the data source. This works fine until I use a calculated item in the columns. This item is a sum of different quarters depending on a user selection. Once I create the definition of this calculated item, ALL divisions are listed for ALL groups.(so EVERY division gets linked with EVERY group)
Do you know why and is there a way around?
Thanks so much!