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
* Constructs the record for adding with container element, slot id, content
	 * element, and position in container.
	 * 
	 * @param module
	 *            the module in which this record executes
	 * @param containerInfo
	 *            The container information
	 * @param contentObj
	 *            The content object to add or remove.
	 * @param newPos
	 *            The position index where to insert the content.
	 */
	public ContentRecord( Module module, ContainerContext containerInfo,
			DesignElement contentObj, int newPos )
	{
		init( containerInfo, contentObj, newPos, true );
		this.module = module;
		assert module != null;
	}
	/**
	 * Initializes the record.
	 * 
	 * @param containerObj
	 *            the container element
	 * @param theSlot
	 *            the slotID in which to put the content
	 * @param contentObj
	 *            the content object to add or remove
	 * @param newPos
	 *            the position index at which the new content is to be inserted