RocketChat.Migrations.add({ version: 72, up() { RocketChat.models.Users.find({ type: 'visitor', 'emails.address': { $exists: true } }, { emails: 1 }).forEach(function(visitor) { RocketChat.models.Users.update({ _id: visitor._id }, { $set: { visitorEmails: visitor.emails }, $unset: { emails: 1 } }); }); } });