diff --git a/src/Core/Vault/Entities/Cipher.cs b/src/Core/Vault/Entities/Cipher.cs
index f6afc090bb..9366a7a0eb 100644
--- a/src/Core/Vault/Entities/Cipher.cs
+++ b/src/Core/Vault/Entities/Cipher.cs
@@ -25,7 +25,10 @@ public class Cipher : ITableObject<Guid>, ICloneable
     public DateTime? DeletedDate { get; set; }
     public Enums.CipherRepromptType? Reprompt { get; set; }
     public string Key { get; set; }
+    // Deprecated. Left for backwards compatibility with old archive handling.
+    // Remove after all clients migrate to the Archives JSON column.
     public DateTime? ArchivedDate { get; set; }
+    public string Archives { get; set; }
 
     public void SetNewId()
     {
diff --git a/src/Infrastructure.EntityFramework/Vault/Repositories/Queries/CipherDetailsQuery.cs b/src/Infrastructure.EntityFramework/Vault/Repositories/Queries/CipherDetailsQuery.cs
index 880ee77854..465404c760 100644
--- a/src/Infrastructure.EntityFramework/Vault/Repositories/Queries/CipherDetailsQuery.cs
+++ b/src/Infrastructure.EntityFramework/Vault/Repositories/Queries/CipherDetailsQuery.cs
@@ -34,7 +34,9 @@ public class CipherDetailsQuery : IQuery<CipherDetails>
                         FolderId = (_ignoreFolders || !_userId.HasValue || c.Folders == null || !c.Folders.ToLowerInvariant().Contains(_userId.Value.ToString())) ?
                             null :
                             CoreHelpers.LoadClassFromJsonData<Dictionary<Guid, Guid>>(c.Folders)[_userId.Value],
-                        ArchivedDate = c.ArchivedDate,
+                        ArchivedDate = !_userId.HasValue || c.Archives == null || !c.Archives.ToLowerInvariant().Contains(_userId.Value.ToString()) ?
+                            null :
+                            CoreHelpers.LoadClassFromJsonData<Dictionary<Guid, DateTime>>(c.Archives)[_userId.Value],
                     };
         return query;
     }
diff --git a/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Archive.sql b/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Archive.sql
index 68f11c0d4f..d2c41f29ba 100644
--- a/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Archive.sql	
+++ b/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Archive.sql	
@@ -26,7 +26,11 @@ BEGIN
     UPDATE
         [dbo].[Cipher]
     SET
-        [ArchivedDate] = @UtcNow,
+        [ArchivedDate] = JSON_MODIFY(
+            COALESCE([Archives], N'{}'),
+            '$."' + CONVERT(NVARCHAR(36), @UserId) + '"',
+            @UtcNow
+        ),
         [RevisionDate] = @UtcNow
     WHERE
         [Id] IN (SELECT [Id] FROM #Temp)
diff --git a/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Unarchive.sql b/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Unarchive.sql
index c2b7b10619..d3ef3df96e 100644
--- a/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Unarchive.sql	
+++ b/src/Sql/dbo/Vault/Stored Procedures/Cipher/Cipher_Unarchive.sql	
@@ -26,7 +26,11 @@ BEGIN
     UPDATE
         [dbo].[Cipher]
     SET
-        [ArchivedDate] = NULL,
+        [Archives] = JSON_MODIFY(
+            COALESCE([Archives], N'{}'),
+            '$."' + CONVERT(NVARCHAR(36), @UserId) + '"',
+            NULL
+        ),
         [RevisionDate] = @UtcNow
     WHERE
         [Id] IN (SELECT [Id] FROM #Temp)
diff --git a/util/Migrator/DbScripts/2025-12-02_AddCipherArchives.sql b/util/Migrator/DbScripts/2025-12-02_AddCipherArchives.sql
index 421fcc4487..bbfe5d91e3 100644
--- a/util/Migrator/DbScripts/2025-12-02_AddCipherArchives.sql
+++ b/util/Migrator/DbScripts/2025-12-02_AddCipherArchives.sql
@@ -160,3 +160,105 @@ FROM
 WHERE
     C.[UserId] = @UserId;
 GO
+
+IF OBJECT_ID('[dbo].[Cipher_Archive]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[Cipher_Archive];
+END
+GO
+
+CREATE PROCEDURE [dbo].[Cipher_Archive]
+    @Ids AS [dbo].[GuidIdArray] READONLY,
+    @UserId AS UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    CREATE TABLE #Temp
+    (
+        [Id] UNIQUEIDENTIFIER NOT NULL,
+        [UserId] UNIQUEIDENTIFIER NULL
+    )
+
+    INSERT INTO #Temp
+    SELECT
+        [Id],
+        [UserId]
+    FROM
+        [dbo].[UserCipherDetails](@UserId)
+    WHERE
+        [Edit] = 1
+      AND [ArchivedDate] IS NULL
+      AND [Id] IN (SELECT * FROM @Ids)
+
+    DECLARE @UtcNow DATETIME2(7) = SYSUTCDATETIME();
+    UPDATE
+        [dbo].[Cipher]
+    SET
+        [ArchivedDate] = JSON_MODIFY(
+            COALESCE([Archives], N'{}'),
+            '$."' + CONVERT(NVARCHAR(36), @UserId) + '"',
+            @UtcNow
+        ),
+        [RevisionDate] = @UtcNow
+    WHERE
+        [Id] IN (SELECT [Id] FROM #Temp)
+
+    EXEC [dbo].[User_BumpAccountRevisionDate] @UserId
+
+    DROP TABLE #Temp
+
+    SELECT @UtcNow
+END
+GO
+
+IF OBJECT_ID('[dbo].[Cipher_Unarchive]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[Cipher_Unarchive];
+END
+GO
+
+CREATE PROCEDURE [dbo].[Cipher_Unarchive]
+    @Ids AS [dbo].[GuidIdArray] READONLY,
+    @UserId AS UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    CREATE TABLE #Temp
+    (
+        [Id] UNIQUEIDENTIFIER NOT NULL,
+        [UserId] UNIQUEIDENTIFIER NULL
+    )
+
+    INSERT INTO #Temp
+    SELECT
+        [Id],
+        [UserId]
+    FROM
+        [dbo].[UserCipherDetails](@UserId)
+    WHERE
+        [Edit] = 1
+      AND [ArchivedDate] IS NOT NULL
+      AND [Id] IN (SELECT * FROM @Ids)
+
+    DECLARE @UtcNow DATETIME2(7) = SYSUTCDATETIME();
+    UPDATE
+        [dbo].[Cipher]
+    SET
+        [Archives] = JSON_MODIFY(
+            COALESCE([Archives], N'{}'),
+            '$."' + CONVERT(NVARCHAR(36), @UserId) + '"',
+            NULL
+        ),
+        [RevisionDate] = @UtcNow
+    WHERE
+        [Id] IN (SELECT [Id] FROM #Temp)
+
+    EXEC [dbo].[User_BumpAccountRevisionDate] @UserId
+
+    DROP TABLE #Temp
+
+    SELECT @UtcNow
+END
+GO