I'm on a C-7 on 2.3.8.137. I migrated my other hub from a C-8 to a C-8 Pro and the devices and variables on this hub failed to link to the new hub. So I ran the update process. My devices updated/linked, but my variables did not. Instead, I received a new set of linked variables from the hub. Now my previously-linked variables are orphaned and there appears to be no way to remove them. How do I get rid of them?