*Check Health dcdiag /e /v /q

https://learn.microsoft.com/en-us/windows-server/storage/dfs-replication/migrate-sysvol-to-dfsr

Type repadmin /ReplSum to verify that Active Directory replication is working properly The delta numbers reflect the last sync. repadmin /replsummary

https://www.mcs.support/guide-to-migrate-frs-to-dfsr-using-dfsrmig/