This command will look for the accounts-drive-knowledge.tgz file underneath the /opt/zimbra/tmp/modules/generate folder and begin the import. After the accounts are migrated to Zimbra Daffodil (v10) server as per Migration of accounts portion, import the Cellular details using the migration utility: Google Workspace is meant to help stringent privateness and security https://www.hostscheap.com/zimbra-migration-service