BUG: resolve issues related to multivolume initialization based on SeriesTime that prevented using those nodes in PkModeling; remove the FileList attribute after the multivolume is loaded: fixes issue #3213.


git-svn-id: http://svn.slicer.org/Slicer4/trunk@22266 3bd1e089-480b-0410-8dfb-8563597acbee