How to undo failover the virtual machine to Production Site at Veeam Backup and Replication v12
One method for completing failover is to use failover undo. When you undo failover, you return to the original VM from a VM replica. When a virtual machine replica is in the Failover state, Veeam Backup & Replication discards all changes made to the replica. This is because the Failover state is intended to be a temporary state used to restore the virtual machine to operation quickly in the event of a disaster.