Is migration working for anyone on Xcode beta6?

My migration doesn't currently work, but does get called. In my Object file is the below:

enum TodoSchemaV1: VersionedSchema {
    static var models: [any PersistentModel.Type] {
        [ToDoItem.self]
    }
    
    static var versionIdentifier: String = "Initial version"
    
    @Model
    final class ToDoItem {
        @Attribute(.unique) var id: String
        var timestamp: Date
        var completed: Bool
        var title: String
        var info: String
        
        init(timestamp: Date, completed: Bool, title: String, info: String) {
            self.id = UUID().uuidString
            self.timestamp = timestamp
            self.completed = completed
            self.title = title
            self.info = info
        }
    }
}

enum TodoSchemaV2: VersionedSchema {
    static var versionIdentifier: String = "Adds priority"
    
    static var models: [any PersistentModel.Type] {
        [ToDoItem.self]
    }
    
    @Model
    final class ToDoItem {
        @Attribute(.unique) var id: String
        var timestamp: Date
        var completed: Bool
        var title: String
        var info: String
        var priority: Int
        
        init(timestamp: Date, completed: Bool, title: String, info: String, priority: Int) {
            self.id = UUID().uuidString
            self.timestamp = timestamp
            self.completed = completed
            self.title = title
            self.info = info
            self.priority = priority
        }
    }
}

enum MigrationPlan: SchemaMigrationPlan {
    static var schemas: [any VersionedSchema.Type] {
        [TodoSchemaV1.self, TodoSchemaV2.self]
    }
    
    static var stages: [MigrationStage] {
        [migrateV1toV2]
    }

    static let migrateV1toV2 = MigrationStage.custom(fromVersion: TodoSchemaV1.self, toVersion: TodoSchemaV2.self, willMigrate: { context in
        guard let todoItemsV1 = try? context.fetch(FetchDescriptor<TodoSchemaV1.ToDoItem>()) else {
            return
        }
        
        for item in todoItemsV1 {
            // TODO: Work out how to add the priority value
        }
        
        do {
            try context.delete(model: TodoSchemaV1.ToDoItem.self)
            try context.save()
        } catch {
            context.rollback()
            fatalError("Migrating from v1 to v2 failed")
        }
        
    }, didMigrate: nil)
}

Then where I set up the container

container = try ModelContainer(for: [ToDoItem.self],
                                           migrationPlan: MigrationPlan.self,
                                           ModelConfiguration(for: [ToDoItem.self]))

And then that container is passed to my base view