Switching back to the master domain manager from the backup master domain manager

After upgrading the old master domain manager to the 10.2.x version, you can now switch back the master capabilities, so that you restore your environment to the previous state, as follows:

Stop the application server as described in Application server - starting and stopping.
Switch the upgraded backup master domain manager, which now becomes the master domain manager, by issuing the following command from either the Dynamic Workload Console or the command line of your current backup master domain manager:
From the Dynamic Workload Console

In the navigation tree, click Monitoring and Reporting > Monitor Workload > select the engine and the object type Workstation, click run and, in the table of results, select backup master domain manager workstation name, click More Actions, and select Become Master Domain Manager.

From the command line of the back-level master domain manager
Issue the following command:
```
conman "switchmgr masterdm;new_mgr_cpu"
```
where new_mgr_cpu is the backup master domain manager workstation name.
Switch the event processor from the old backup master domain manager to the master domain manager, by running the following command from either the Dynamic Workload Console or the command line of your old backup master domain manager:
Restart the application server as described in Application server - starting and stopping.

You have now successfully switched back the upgraded master domain manager. You can now proceed to Making the switch permanent.