RelocateVM_Task is inactive.This is an expected behaviour and occurs because VCDA sets a protection flag on Replication Tracking VMs to prevent manual migrations that could break the replication chain or metadata synchronization. When a VM is in an active replication state, vCenter disables the relocation methods in the destination site.
To move these virtual machines to a different datastore, perform the migration through the VCDA interface rather than vCenter Server.