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/ContentCommand.java
}
	}
	/**
	 * Changes derived elements to derive from the parent (if any) instead.
	 * 
	 * @param obj
	 *            the element to clean up
	 * @throws ExtendsException
	 *             if an error occurs, but the operation should not fail under
	 *             normal conditions
	 */
	private void adjustDerived( DesignElement obj ) throws ExtendsException
	{
		
		Collection derived = obj.getDerived( );
		if ( derived.isEmpty( ) )
			return;
		DesignElement parent = obj.getExtendsElement( );
		Iterator iter = derived.iterator( );
		while ( iter.hasNext( ) )
		{
			DesignElement child = (DesignElement) iter.next( );
			ExtendsCommand childCmd = new ExtendsCommand( module, child );
			childCmd.setExtendsElement( parent );
		}
	}
	/**
	 * Adjusts references to an element that is to be deleted. The element to be
	 * deleted is one that has references in the form of element reference
	 * properties on other elements. These other elements, called "clients",