protected override void Unmerge(ConfigurationElement sourceElement,
ConfigurationElement parentElement,
ConfigurationSaveMode saveMode)
{
RootProfilePropertySettingsCollection parent = parentElement as RootProfilePropertySettingsCollection;
RootProfilePropertySettingsCollection source = sourceElement as RootProfilePropertySettingsCollection;
base.Unmerge(sourceElement, parentElement, saveMode);
GroupSettings.InternalUnMerge(source.GroupSettings, (parent != null) ? parent.GroupSettings : null, saveMode);
}