How to Prepare for Multisystem Network Migration

If you are upgrading multiple synchronized regions to this release, perform the following steps to plan for it.

Ensure that your existing multisystem network has at least two focal regions. If you have only one focal region, unlink a subordinate region and relink it as a focal region.
Choose a focal region and unlink it from the multisystem network.
Upgrade the focal region, and perform migration tasks.
After you have completed all of the steps in this guide, link your new focal region in migration mode to an existing focal region.
Select the next product region to upgrade and unlink it.
Upgrade this product region and then synchronize it to the focal region that you upgraded in Step 3.
Continue until all regions are upgraded.

Notes:

You only perform knowledge base migration for the first region because the focal knowledge base contains details of all linked regions.
You only link the first new focal region in migration mode.