Hi There, i'm not sure if anything changed in Beta 7 or it's me being an idiot but I can't seem to update my relationship property, anyone else experienced this? @Model final class Goal { // More properties here @Relationship(deleteRule: .cascade, inverse: \Progress.goal) var progress: [Progress]? init(progress: [Progress]? = []) { self.progress = progress } func updateProgress(with value: Double) { // I've also tried this with having the modelContext in the initialiser let context = ModelContext(DataStore.container) let newProgress = Progress(date: Date.now, value: value) newProgress.goal = self context.insert(newProgress) self.progress?.append(newProgress) // Other code } } @Model final class Progress { var progressDate: Date? var value: Double? var goal: Goal? init(date: Date = Date.now, value: Double = 0.0, goal: Goal? = nil) { self.progressDate = date self.value = value self.goal = goal } } Everytime I call the updateProgress method I get a fatal error (e.g. goal.updateProgress(with: 33.2) The Error Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Unacceptable type of value for to-one relationship: property = "goal"; desired type = NSManagedObject; given type = NSManagedObject; value = <NSManagedObject: 0x2823e0c80> (entity: Goal; id: 0x8617307020b13c03 <x-coredata://7AE46844-B3C6-46A3-B350-FC65B7CCDF8F/Goal/p17>; data: { // Properties here }) I've tried many different ways but without any luck… In case this is a bug: FB13034172