Bug 145724 Change version after auto convert
By the request of 136536, user get warning message to confirm the auto convert. If user select yes, the file convert to newest format, but the version is still old. If user open this file again, he'll get the warning message even the file converted.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
* @param element
	 *            the element to copy
	 * @return the copy of the element
	 */
	public static DesignElement getCopy( DesignElement element )
	{
		if ( element == null )
			return null;
		try
		{
			DesignElement copy = (DesignElement) element.clone( );
			assert copy != null;
			return copy;
		}
		catch ( CloneNotSupportedException e )
		{
			assert false;
			return null;
		}
	}
	/**
	 * Returns externalized message. If There is no externalized message, return
	 * null.
	 * 
	 * @param element
	 *            Design element.
	 * @param propName
	 *            Name of property
	 * @return externalized message.
	 */