I'm a bit stuck, I believe I'm experiencing this issue too although I'm not sure if it's exactly the same or not. I'm trying to test a migration from V2 to V3 in the simulator but the app always terminates before didMigrate with issues such as:
error: Attempting to retrieve an NSManagedObjectModel version checksum while the model is still editable. This may result in an unstable verison checksum. Add model to NSPersistentStoreCoordinator and try again.
error: CoreData+CloudKit: -[NSCloudKitMirroringDelegate recoverFromError:](2313): <NSCloudKitMirroringDelegate: 0x600003d05d10> - Attempting recovery from error: Error Domain=NSCocoaErrorDomain Code=134060 "A Core Data error occurred." UserInfo={NSLocalizedFailureReason=The mirroring delegate could not initialize because it's store was removed from the coordinator.}
BUG IN CLIENT OF CLOUDKIT: Registering a handler for a CKScheduler activity identifier that has already been registered (com.apple.coredata.cloudkit.activity.export.8315617A-2590-4989-A1F0-0AACDDA4713E).
I'm not sure the first one is relevant, but the others are similar to those of the OP. I have attached the entire output here:
Output Log
The test device is an iPhone 16 simulator running iOS 18.3. @DTS Engineer what is the recommended course of action for me? Do I need to wait for a fix, is it then an Xcode fix or in iOS? It seems I cannot perform migrations at all until this is fixed which seems like an issue that would affect many people?
Thanks!
Will
