I believe the answer is YES unless you have the tool to migrate SCS database to SCCM. Please contact local Intel representative to get details on migration tool avaiability. Mohan.
vPro clients provisioned by SCS/SMS Add-on can use the same Certificate Authority, Root CA, and Provisioning Cert as you transition to SCCM; however, please keep in mind that SCCM only supports TLS and not MTLS. For the client to be migration to SCCM from SCS/SMS, the client will need to be unprovisioned so that SCCM and reprovision the client using its native configuration. Intel will be providing (expect to be release near SCCM RTM launch) a utility that will help automate this migration process from the Intel SCS to SCCM; expert to see more detail on the migration process posted on vPro Expert Center in the coming weeks.