diff --git a/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m b/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m
index 91609dad3..5fe505c7b 100644
--- a/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m
+++ b/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m
@@ -24,9 +24,12 @@ NS_ASSUME_NONNULL_BEGIN
 @interface OWSMessageContentJob : TSYapDatabaseObject
 
 @property (nonatomic, readonly) NSDate *createdAt;
+@property (nonatomic, readonly) NSData *envelopeData;
+@property (nonatomic, readonly, nullable) NSData *plaintextData;
 
 - (instancetype)initWithEnvelopeData:(NSData *)envelopeData
                        plaintextData:(NSData *_Nullable)plaintextData NS_DESIGNATED_INITIALIZER;
+- (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithUniqueId:(NSString *)uniqueId NS_UNAVAILABLE;
 - (OWSSignalServiceProtosEnvelope *)envelopeProto;
 
@@ -34,15 +37,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark -
 
-@interface OWSMessageContentJob ()
-
-@property (nonatomic, readonly) NSData *envelopeData;
-@property (nonatomic, readonly, nullable) NSData *plaintextData;
-
-@end
-
-#pragma mark -
-
 @implementation OWSMessageContentJob
 
 + (NSString *)collection
@@ -66,6 +60,11 @@ NS_ASSUME_NONNULL_BEGIN
     return self;
 }
 
+- (nullable instancetype)initWithCoder:(NSCoder *)coder
+{
+    return [super initWithCoder:coder];
+}
+
 - (OWSSignalServiceProtosEnvelope *)envelopeProto
 {
     return [OWSSignalServiceProtosEnvelope parseFromData:self.envelopeData];
@@ -75,8 +74,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark - Finder
 
-NSString *const OWSMessageContentJobFinderExtensionName = @"OWSBatchMessageProcessingFinderExtensionName";
-NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSBatchMessageProcessingFinderExtensionGroup";
+NSString *const OWSMessageContentJobFinderExtensionName = @"OWSMessageContentJobFinderExtensionName2";
+NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSMessageContentJobFinderExtensionGroup2";
 
 @interface OWSMessageContentJobFinder : NSObject
 
diff --git a/SignalServiceKit/src/Messages/OWSMessageReceiver.m b/SignalServiceKit/src/Messages/OWSMessageReceiver.m
index 6d58214da..d5c9cb927 100644
--- a/SignalServiceKit/src/Messages/OWSMessageReceiver.m
+++ b/SignalServiceKit/src/Messages/OWSMessageReceiver.m
@@ -18,15 +18,13 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-#pragma mark - Persisted data model
-
-@class OWSSignalServiceProtosEnvelope;
-
 @interface OWSMessageDecryptJob : TSYapDatabaseObject
 
 @property (nonatomic, readonly) NSDate *createdAt;
+@property (nonatomic, readonly) NSData *envelopeData;
 
 - (instancetype)initWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope NS_DESIGNATED_INITIALIZER;
+- (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithUniqueId:(NSString *)uniqueId NS_UNAVAILABLE;
 - (OWSSignalServiceProtosEnvelope *)envelopeProto;
 
@@ -34,14 +32,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark -
 
-@interface OWSMessageDecryptJob ()
-
-@property (nonatomic, readonly) NSData *envelopeData;
-
-@end
-
-#pragma mark -
-
 @implementation OWSMessageDecryptJob
 
 + (NSString *)collection
@@ -64,6 +54,11 @@ NS_ASSUME_NONNULL_BEGIN
     return self;
 }
 
+- (nullable instancetype)initWithCoder:(NSCoder *)coder
+{
+    return [super initWithCoder:coder];
+}
+
 - (OWSSignalServiceProtosEnvelope *)envelopeProto
 {
     return [OWSSignalServiceProtosEnvelope parseFromData:self.envelopeData];
@@ -73,8 +68,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark - Finder
 
-NSString *const OWSMessageDecryptJobFinderExtensionName = @"OWSMessageProcessingJobFinderExtensionName";
-NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessingJobFinderExtensionGroup";
+NSString *const OWSMessageDecryptJobFinderExtensionName = @"OWSMessageProcessingJobFinderExtensionName2";
+NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessingJobFinderExtensionGroup2";
 
 @interface OWSMessageDecryptJobFinder : NSObject
 
@@ -103,6 +98,8 @@ NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessin
 
     _dbConnection = dbConnection;
 
+    [OWSMessageDecryptJobFinder registerLegacyClasses];
+
     return self;
 }
 
@@ -180,9 +177,19 @@ NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessin
     return [[YapDatabaseView alloc] initWithGrouping:grouping sorting:sorting versionTag:@"1" options:options];
 }
 
++ (void)registerLegacyClasses
+{
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        // We've renamed OWSMessageProcessingJob to OWSMessageDecryptJob.
+        [NSKeyedUnarchiver setClass:[OWSMessageDecryptJob class] forClassName:[OWSMessageDecryptJob collection]];
+    });
+}
 
 + (void)syncRegisterDatabaseExtension:(YapDatabase *)database
 {
+    [self registerLegacyClasses];
+
     YapDatabaseView *existingView = [database registeredExtension:OWSMessageDecryptJobFinderExtensionName];
     if (existingView) {
         OWSFail(@"%@ was already initialized.", OWSMessageDecryptJobFinderExtensionName);
diff --git a/SignalServiceKit/src/Storage/TSStorageManager.m b/SignalServiceKit/src/Storage/TSStorageManager.m
index 19828b785..7d9614b26 100644
--- a/SignalServiceKit/src/Storage/TSStorageManager.m
+++ b/SignalServiceKit/src/Storage/TSStorageManager.m
@@ -186,10 +186,23 @@ void setDatabaseInitialized()
 
 - (nullable Class)unarchiver:(NSKeyedUnarchiver *)unarchiver cannotDecodeObjectOfClassName:(NSString *)name originalClasses:(NSArray<NSString *> *)classNames
 {
+    DDLogError(@"%@ Could not decode object: %@", self.tag, name);
     OWSProdError([OWSAnalyticsEvents storageErrorCouldNotDecodeClass]);
     return [OWSUnknownObject class];
 }
 
+#pragma mark - Logging
+
++ (NSString *)tag
+{
+    return [NSString stringWithFormat:@"[%@]", self.class];
+}
+
+- (NSString *)tag
+{
+    return self.class.tag;
+}
+
 @end
 
 #pragma mark -