In Apex One, there is a utility called ipxfer.exe that can transfer one Apex One client from one server to another. It can also reinitiate client-server communication.
However, there is no equivalent utility for the Apex One (Mac) Security Agent client. The administrator has to uninstall/reinstall the Apex One (Mac) Security Agent client to transfer it to another server.
Refer to this article for the instruction on how to perform Apex One (Mac) Security Agent Uninstallation.