diff --git a/src/WorkflowManager/Contracts/Migrations/M005_Payload_seriesUid.cs b/src/WorkflowManager/Contracts/Migrations/M005_Payload_seriesUid.cs
index 74e1e7b83..47e87207c 100755
--- a/src/WorkflowManager/Contracts/Migrations/M005_Payload_seriesUid.cs
+++ b/src/WorkflowManager/Contracts/Migrations/M005_Payload_seriesUid.cs
@@ -27,7 +27,7 @@ public override void Up(BsonDocument document)
         {
             try
             {
-                document.Add("SeriesInstanceUid", BsonNull.Create(null).ToJson(), true);
+                document.Add("SeriesInstanceUid", new BsonString(""), true);
             }
             catch
             {
diff --git a/src/WorkflowManager/Contracts/Migrations/M006_Payload_triggeredWorkflows.cs b/src/WorkflowManager/Contracts/Migrations/M006_Payload_triggeredWorkflows.cs
index ab947dd96..95838bd48 100755
--- a/src/WorkflowManager/Contracts/Migrations/M006_Payload_triggeredWorkflows.cs
+++ b/src/WorkflowManager/Contracts/Migrations/M006_Payload_triggeredWorkflows.cs
@@ -27,7 +27,7 @@ public override void Up(BsonDocument document)
         {
             try
             {
-                document.Add("TriggeredWorkflowNames", BsonNull.Create(null).ToJson(), true);
+                document.Add("TriggeredWorkflowNames", new BsonArray());
             }
             catch
             {
diff --git a/src/WorkflowManager/Contracts/Models/Payload.cs b/src/WorkflowManager/Contracts/Models/Payload.cs
index 2abdcdadc..564d90396 100755
--- a/src/WorkflowManager/Contracts/Models/Payload.cs
+++ b/src/WorkflowManager/Contracts/Models/Payload.cs
@@ -27,7 +27,7 @@
 
 namespace Monai.Deploy.WorkflowManager.Common.Contracts.Models
 {
-    [CollectionLocation("Payloads"), RuntimeVersion("1.0.7"), StartUpVersion("1.0.7")]
+    [CollectionLocation("Payloads"), RuntimeVersion("1.0.7")]
     public class Payload : IDocument
     {
         [JsonConverter(typeof(DocumentVersionConvert)), BsonSerializer(typeof(DocumentVersionConverBson))]
diff --git a/src/WorkflowManager/Contracts/Models/WorkflowRevision.cs b/src/WorkflowManager/Contracts/Models/WorkflowRevision.cs
index 198e8399f..8cd2076e8 100755
--- a/src/WorkflowManager/Contracts/Models/WorkflowRevision.cs
+++ b/src/WorkflowManager/Contracts/Models/WorkflowRevision.cs
@@ -23,7 +23,7 @@
 
 namespace Monai.Deploy.WorkflowManager.Common.Contracts.Models
 {
-    [CollectionLocation("Workflows"), RuntimeVersion("1.0.4"), StartUpVersion("1.0.4")]
+    [CollectionLocation("Workflows"), RuntimeVersion("1.0.4")]
     public class WorkflowRevision : ISoftDeleteable, IDocument
     {
         [BsonId]