If your organization’s network domain changes, all existing licenses can be redistributed from the old domain to the new one. Contact Google Cloud Support for assistance.
In general, all licenses must be transferred to the new domain. Google does not allow partial redistribution.
Requirements for a full license transfer are:
All licenses must be moved from DomainA.com to DomainB.com
Before the transfer, DomainB.com cannot have any active CFM licenses
DomainB.com cannot be a domain on the free version of Google Workspace