iCloud Core Data Syncing Issue - Empty Notifications

Question

I'm having some weird issues with iCloud and Core Data syncing across devices. The problem is that records are syncing sporadically and certain notifications are blank.

For example, if I add three records to the database, only two of the three records will sync. Same thing for deletions. However, when I rebuild the data store from scratch (NSPersistentStoreRebuildFromUbiquitousContentOption), all the correct entries are present. As you can see in the log file below, I think the issue is that the Notifications are not populating correctly. The middle change should be a deletion but nothing is populated.

See below a copy of the logs and the code I am using for mergeChangesFromContextDidSaveNotification.

Logs:

• 2015-05-02 00:05:42.339 Tracker[1370:219748] persistentStoreDidImportUbiquitousContentChanges
• 2015-05-02 00:05:42.339 Tracker[1370:219748] NSConcreteNotification 0x17485dbe0 {name = com.apple.coredata.ubiquity.importer.didfinishimport; object = ; userInfo = { deleted = "{(\n 0xd00000002fe40000 \n)}"; inserted = "{(\n)}"; updated = "{(\n)}"; }}
• 2015-05-02 00:05:42.341 Tracker[1370:219748] Underlying data changed ... refreshing!
• 2015-05-02 00:05:44.293 Tracker[1370:219748] persistentStoreDidImportUbiquitousContentChanges
• 2015-05-02 00:05:44.293 Tracker[1370:219748] NSConcreteNotification 0x170a498a0 {name = com.apple.coredata.ubiquity.importer.didfinishimport; object = ; userInfo = { deleted = "{(\n)}"; [SHOULD BE A DELETION BUT NOTHING] inserted = "{(\n)}"; updated = "{(\n)}"; }}
• 2015-05-02 00:05:44.308 Tracker[1370:219748] Underlying data changed ... refreshing!
• 2015-05-02 00:05:46.266 Tracker[1370:219748] persistentStoreDidImportUbiquitousContentChanges
• 2015-05-02 00:05:46.266 Tracker[1370:219748] NSConcreteNotification 0x174a5c0b0 {name = com.apple.coredata.ubiquity.importer.didfinishimport; object = ; userInfo = { deleted = "{(\n 0xd00000002fe00000 \n)}"; inserted = "{(\n)}"; updated = "{(\n)}"; }}
• 2015-05-02 00:05:46.292 Tracker[1370:219748] Underlying data changed ... refreshing!

Code:

NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];

[notificationCenter addObserverForName:NSPersistentStoreDidImportUbiquitousContentChangesNotification
                                    object:self.persistentStoreCoordinator
                                     queue:[NSOperationQueue mainQueue]
                                usingBlock:^(NSNotification *note) {

                                    NSLog(@"persistentStoreDidImportUbiquitousContentChanges");
                                    NSLog(@"%@", note);

                                    [self.managedObjectContext performBlock:^{
                                        [self.managedObjectContext mergeChangesFromContextDidSaveNotification:note];

                                        NSNotification* refreshNotification =
                                            [NSNotification notificationWithName:@"iCloudReloadTable"
                                                                          object:self
                                                                        userInfo:[note userInfo]];

                                            [[NSNotificationCenter defaultCenter] postNotification:refreshNotification];
                                    }];
                                }];