The QmitkPartialVolumeAnalysis contains the three closed figures from the measurement view, and uses the same art to name the figure's node but with an own counter. This can lead to a situation with two distinct planar figure objects with the same name in DataManager.
Also using the PVAnalysis view and switching afterwards to measurement, the figure added will not be shown, since it gets assigned to the helper object created by the PVAnalysisView.