Bug 188829 Move the item ,the trans of the model don't close.
1:New report design. 2:Add a Embedded image. 3:Add another imge , then drag the second imge to the first position. 4:Change the size of the first image. Expected: Image change the size. Now: Image size don't change.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/AbstractContentCommand.java
/**
	 * Moves the element from one position to the new place. The element stays
	 * in the same slot/property.
	 * 
	 * @param content
	 *            the element to move
	 * @param newPosn
	 *            the new position
	 * @throws ContentException
	 *             if <code>content</code> cannot resides in the new position
	 * 
	 */
	protected void doMovePosition( DesignElement content, int newPosn )
			throws ContentException
	{
		
		if ( !focus.isContainerMultipleCardinality( ) )
			return;
		int oldPosn = focus.indexOf( module, content );
		int adjustedNewPosn = checkAndAdjustPosition( oldPosn, newPosn, focus
				.getContentCount( module ) );
		if ( oldPosn == adjustedNewPosn )
			return;
		MoveContentRecord record = new MoveContentRecord( module, focus,
				content, adjustedNewPosn );
		record.setEventTarget( eventTarget );
		getActivityStack( ).execute( record );
	}
	/**
	 * Returns the target element for the notification event.