Schedulers support forward compatibility. Tasks created in previous versions of WebSphere® Application Server Enterprise Edition 5.0 or WebSphere Business Integration Server Foundation 5.1 continue to run in WebSphere Application Server, Version 6.x schedulers. Tasks that you create using Version 6.x are not compatible with product schedulers from Version 5.x. Version 5.x schedulers do not run any Version 6.x tasks.