Bug 155943 "Restore Properties" is always enabled for extended chart
Steps to reproduce: 1.New a report, includes a library, extends lib.chart 2.Choose the chart Expected result: "Restore Properties" is disabled untill set/change any local properties for the chart Actual result: "Restore Properties" is always enabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
* The compatibility to create bound columns.
	 */
	protected BoundColumnsWriterMgr boundColumnsMgr = null;
	/**
	 * Returns the module to write.
	 * 
	 * @return the module to write
	 */
	abstract protected Module getModule( );
	/**
	 * Writes the report design to a file.
	 * 
	 * @param outputFile
	 *            output file into which to write the design
	 * 
	 * @throws IOException
	 *             if a write error occurs
	 */
	public void write( File outputFile ) throws IOException
	{
		writer = new IndentableXMLWriter( outputFile, getModule( )
				.getUTFSignature( ) );
		writeFile( );
		writer.close( );
	}
	/**
	 * Writes the report design to the output stream.
	 * 
	 * @param os
	 *            the output stream to which the design is written.