Bug 146761 All structure properties change can't be restore
Steps to reproduce: 1.New a report, extends lib.table 2.Add a structure property(such as filter, column binding...) on table 3.Choose the table, click "Restore Property" Expected result: Local propery is removed Actual result: Local property can't be removed so that "Restore Property" is always enabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/SimpleGroupElementHandle.java
.equals( propName ) ) )
			return false;
		for ( int i = 0; i < elements.size( ); i++ )
		{
			DesignElementHandle current = ( (DesignElementHandle) elements
					.get( i ) );
			DesignElementHandle container = current.getContainer( );
			
			
			if ( CellHandle.DROP_PROP.equals( propName ) )
			{
				if ( current instanceof CellHandle )
				{
					assert container instanceof RowHandle;
					if ( !( container.getContainer( ) instanceof GroupHandle ) )
						return true;
				}
			}
			else
			{
				while ( container != null )
				{
					if ( container instanceof MasterPageHandle )
						return true;
					container = container.getContainer( );
				}
			}
		}
		return false;
	}