If orphan recovery point is found the next step is to to delete replication relationship for agent and delete recovery points on taget core and re-setup replication for agent and either seed or re-replicate agent data.
Delete an orphaned recovery point by clicking the Delete button within the recovery point or by performing a Delete Range from the Actions menu. Please note that both of these options will result in the deletion of the entire recovery point chain, beginning with the orphan. Also, see Removing Recovery Points in Rapid Recovery 6