The solution below describes steps to converge external PSC deployment topology during migration or upgrade process.
Convergence Steps
Do not decommission an external PSC until all vCenter Server management nodes registered to that PSC have gone through the convergence process.
Note: Verify the steps above have been completed prior to starting the decommissioning process.
Decommission external Platform Services Controllers using the cmsso-util command. For detailed instructions on decommissioning an external Platform Services Controller see Decommission of external PSC after successful converge upgrade/migration