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/ContentRecord.java
protected boolean add = true;
	/**
	 * Memento for the old element position when deleting the element.
	 */
	protected int oldPosn = -1;
	/**
	 * The module set when using element IDs.
	 */
	protected final Module module;
	/**
	 * Constructs the record with container element, slot id, content element,
	 * and flag for adding or dropping.
	 * 
	 * @param module
	 *            the module in which this record executes
	 * @param containerInfor
	 *            The container information
	 * @param contentObj
	 *            The content object to add or remove.
	 * @param isAdd
	 *            Whether to add or remove the item.
	 */
	public ContentRecord( Module module, ContainerContext containerInfor,
			DesignElement contentObj, boolean isAdd )
	{
		init( containerInfor, contentObj, -1, isAdd );
		this.module = module;
		assert module != null;
	}
	/**