TreeGrid - how to remember expanded nodes

[JLivermore]

SmartClient Version: SC_SNAPSHOT-2011-01-06/PowerEdition Deployment (built 2011-01-06)

IE9

Is there a way to remember the state of the tree and how it has been expanded after a fetch?

[Isomorphic]

See Tree.getOpenState() / setOpenState(), and Tree.openProperty.