When upgrading, although compatibility with previous version components is a feature of Tivoli Workload Scheduler, potential problems can be avoided by upgrading all components to the new level as quickly as possible.
To avoid problems, ensure that when you upgrade to a new version of Tivoli Workload Scheduler you do so across your whole environment.
The components of this version of Tivoli Workload Scheduler are compatible with components of many previous versions (see Tivoli® Workload Automation: Overview for full details). However, running Tivoli Workload Scheduler in a mixed network increases the possibility of problems arising, because each new release of Tivoli Workload Scheduler not only adds functions, but also improves the stability and reliability of the various components. Try not to run in a mixed network for extended periods.