PropertyKey key = dash.props.findExistingKey(prefix);
String actualID = dash.props.getID(key);
if (oldID == actualID || // handles "null == null" case
(oldID != null && oldID.equals(actualID))) try {
HierarchyAlterer a = new HierarchyAlterer(dash);
a.addTemplate(prefix, newID);
return true;
} catch (Exception e) {}
return false;
}