Bug 176436 Charts Imported from Libraries do not update when libraries change
During a live presentation of BIRT at EclipseCon, we came across a rather embarassing issue. When charts are included in a library, and imported into a report design from a library, any changes to the library instance of the chart do not reflect in the report itself.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/PropertyCommand.java
.getElement( );
			doSetProperty( prop, value );
			if ( definition != null && !definition.hasReferences( ) )
			{
				ContentCommand cmd = new ContentCommand( definition.getRoot( ),
						definition.getContainerInfo( ) );
				cmd.remove( definition );
			}
		}
		catch ( SemanticException e )
		{
			stack.rollback( );
			throw e;
		}
		stack.commit( );
	}
	/**
	 * Private method to set property.
	 * 
	 * @param prop
	 *            the definition of the property to set.
	 * @param value
	 *            the new property value.
	 * @throws ExtendedElementException
	 *             if the extension property is invalid
	 * @throws PropertyValueException
	 *             if the element is a template element and users try to set the
	 *             value of template definition to "null" or a non-exsiting
	 *             element
	 */