After you migrate from Active Response to Trellix EDR, you must remove the Trellix ePolicy Orchestrator - On-premises Cloud Bridge extension from ePO - On-prem.
Log on to ePO - On-prem as an administrator.
Select Menu → Software → Extensions.
In the Extensions pane, select Trellix ePolicy Orchestrator - On-prem to display all related extensions.
Select the Trellix ePO - On-prem Cloud Bridge 1.x extension and click Remove.