duplicate device keys

username: sgreenspan
I recently did a restore from a backup on one of my devices, and found I had to log in to keybase. In doing so, keybase failed to recognize the device and I was forced to register it as a new one. I now have two device keys for the same device (ipad, pad). The quandary is if I revoke one of these keys, are they both revoked?

The issue names no files, tests, or entry points. Start by reproducing the backup-restore and login flow on an iPad, then investigate device-key registration and revocation behavior; done means determining whether revoking one duplicate key also revokes the other and documenting the result or required fix.

Written by the indexing model from the issue text.