You can compile and deploy legacy message maps and legacy message flow nodes in WebSphere® Message Broker Version 8 and later versions. However, if you need to modify any of these resources, you must convert them into message maps that the new Mapping node consumes.
A legacy message map is a message map created as a .msgmap file in earlier versions of WebSphere Message Broker, for example in WebSphere Message Broker Version 7.
Follow these guidelines when you use legacy message maps and legacy message flow nodes in your integration solutions: