In source tab the search-option "Search all descendants" is always greyed out?

[IceTea]

Hi everybody,

we have some DMR-Models with Dimensions which contain several levels and a large amount of members (> 2.000) each. It is timewasting for ReportStudio- or WorkspaceAdvanced-Users to click through the dimension tree to find a specific member to use in the report. So tthey would like to use the search-function in the Source tab. Search functions generally works, but... the option "Search all descendants" is always greyed out (DMR models with CQM or DQM, even in the GO Sales Analysis sample model).

Do i expect too much or what's the story about this "feature"?

Tested Cognos BI Versions are 10.2.1 and 10.2.2.