Microstation 8i ss4 08.11.09.838 German: load pltcfg. Path for PenTable (*.tbl) in print dialog don't deleted automatically

Hi,

MSTN v8i SS4: 08.11.09.838 German, Windows 7

We have the Problem, if we load a pltcfg with empty <DefaultPenTableFileName> --> (<DefaultPenTableFileName xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true" />) the TextBox in print-Dialog don't cleared. The last used *.tbl from last used *.pltcfg is shown.

The changing between two different *tbl -Files in different pltcfg-files working fine. 

What i have to write in the pltcfg, to clear the path in the Print Dialog?