While all information is copied during a migration to make authentication and data flow unchanged, it is necessary to retarget each device and gateway to the new ClearBlade IoT Core offering. Information regarding that change is here.
ports available 8883 and 443
The ClearBlade IoT Core environments leverage DigiCert root certificates for SSL / TLS termination. The current root CA from DigiCert can be downloaded here.
ClearBlade is providing SDKs for drop-in replacement.