id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
9321	DICOM: restore_snapshot for {Volume,VolumeImage} returned None	Zach Pearson	Zach Pearson	"The DICOM bundle never actually returns grids to ChimeraX's various open functions, only the empty list.

To create the Patient, Study, Series hierarchy, the DICOM bundle opens a patient as an empty model, then opens a Study as an empty child model, then the study opens its various series as child models. 

Studies call self.add(s.to_models()) for all Series (s) they own, and Series.to_models() calls DicomData.to_models() which finally returns either grids or DicomContours. 

If there's a way to preserve this hierarchy with the map data restore code I can change my code to adhere to it, or possibly we should have a way to let bundles that do these kinds of screwy things with the model hierarchy return the empty list without the warning. 
"	enhancement	closed	moderate		DICOM		fixed		chimerax-programmers				all	ChimeraX