Keeping filter editor criteria over fetch

Hi all,

I have a ListGrid with:
g.setShowFilterEditor(true);
g.setAllowFilterExpressions(true);

Unfortunately, when I call a fetch(...) on the grid, the values within the filter-editor are removed.

Is there a possibility, to keep the values of the filter-editor as they are, also when I call a fetch(...) ?

Thanks a lot in advance

I have SmartClient Version: v8.2p_2013-10-12/PowerEdition Deployment