SAP Agent for Solution Manager server

Hi

Our Solution Manager version is 7.01 and SP level is 26. I have installed Solution Manager Diagnostic Agent 7.20 in the managed server. As per sap documents, sap host agent is the part of Solution Manager Diagnostic Agent version 7.20, so i did not installed SAP Host Agent.

Question: Do we need SAPCCM4X agent? In one of the SDN message, i have read that SAPCCM4X is not required now as it is part of SAP Host Agent. If this is the case then how satellite system will reports to CEN at Solution manager server via CMSREG user?

Thanks

Amar