Supressing Zero Rows after drilldown with a free characteristic

Hello,

during drilldown with the usage of a free characterictic, some zero rows are shown. If a key figure has no value for all columns, we would like to supress these rows, which are show up with the drilldown characterictic.

Especially drilldowning to account number level in our reports creates a confusing long list with a hundred of zero lines.

Can someone tell me how to suppress this zero lines?

Thanks,

Nuran