Based on my testing, this is what I consider a problem.
When your local Core Data resources are synchronized with iCloud, any rows deleted on another device are deleted. Longer lines can be deleted using the zeroing process.
ManagedObjects, .
, , Core Data, . .
: ManagedObject , NSPersistentStoreCoordinatorStoresDidChangeNotification NSPersistentStoreDidImportUbiquitousContentChangesNotification
. , - .