This step switches internal references and prefixes from the mirror to the primary set of libraries. After the switch, address spaces and jobs of this IOA environment will start using the updated primary libraries instead of the mirror libraries.

1. Select Minor Step 10, Switch to Primary Set to Activate Upgrade.
2. Use the 'S' command to perform the switch.

   After a successful switch, the status changes from yellow 'MIRROR' to green 'PRIMARY'.

3. Press PF3 (END) to return to the Minor Steps Selection panel.