diff --git a/Disco.Data/Repository/DiscoDataContext.cs b/Disco.Data/Repository/DiscoDataContext.cs
index 0b407358..317f0e0f 100644
--- a/Disco.Data/Repository/DiscoDataContext.cs
+++ b/Disco.Data/Repository/DiscoDataContext.cs
@@ -73,6 +73,8 @@ namespace Disco.Data.Repository
         {
             int changeCount = 0;
 
+            this.ChangeTracker.DetectChanges();
+
             // Notify before changes are committed
             var changes = Monitor.RepositoryMonitor.BeforeSaveChanges(this);