Studio : perspective customization not saved

Hello.

In Bonita Studio, I would like to customize the perspective used for diagram modification, for example : move some views at the right of the diagram. I organize this with drag-and-drop like in Eclipse and it work fine : I can change the diagram, customization is kept. But, if I close and restart the studio, customization is lost : perspective is reset ! I haven't found parameter in studio options for that.

Any suggestions?

I use BonitaBPMCommunity-6.2.2 with two screens on Windows XP, Bonita Studio was stretched on these two screens.

Lilian