Repointing VCSA with embedded PSC to external PSC

I did this once before without any issues, but I am getting an error when trying to do so again.  The VCSA with the embedded PSC is on 6.0 U1, as are the external PSC's.  I have tried with both FQDN and IP. 

Actual FQDN and password removed

cmsso-util reconfigure --repoint-psc FQDN  --username administrator --domain-name vsphere.local --passwd password

                  Validating Provided Configuration ...

                  Error: The provided Platform Services Controller(PSC) FQDN is not a replication partner of the localhost

                  Please make sure to provide the Primary Network Identifier (PNID) of the PSC.

Any tips or advice?