Hyper-V Replica does not replicate any new assets (19084)
Hyper-V Replica does not replicate any new assets such as disks, NICs that are added after the initial configuration of Replica is done. Also no risk is raised for the resiliency group in such a scenario.
Workaround
You can either reinitialize the replication or allow Hyper-V Replica to continue replicating only the initially configured assets.