Does anyone know what happens to a mastodon account on mostr.pub when it migrates to a different instance? Is a new account created on the bridge or is the old one just updated?

Ex. if I'm currently yostme_at_fosstodon.org@mostr.pub and I migrate to yostme.social would it then be yostme_at_yostme.social@mostr.pub with the same pubkey?