Updates the PetaPocoRepositoryBase to ensure that the deletion process is wrapped in a transaction so if any of the processes fail, it all gets rolled back.

src/Umbraco.Core/Persistence/Repositories/PetaPocoRepositoryBase.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using Umbraco.Core.Logging;
 using Umbraco.Core.Models.EntityBase;
 using Umbraco.Core.Persistence.Caching;
 using Umbraco.Core.Persistence.Querying;
@@ -69,10 +70,26 @@ namespace Umbraco.Core.Persistence.Repositories
         protected override void PersistDeletedItem(TEntity entity)
         {
             var deletes = GetDeleteClauses();
-            foreach (var delete in deletes)
+
+            //wrap in a transaction in case any of the delete processes fail so they'll get rolled back!
+            using (var trans = Database.GetTransaction())
             {
-                Database.Execute(delete, new {Id = entity.Id});
+                try
+                {
+                    foreach (var delete in deletes)
+                    {
+                        Database.Execute(delete, new { Id = entity.Id });
+                    }
+                    trans.Complete();
+                }
+                catch (Exception ex)
+                {
+                    trans.Dispose();
+                    LogHelper.Error(GetType(), "Deletion process failed, transaction rolled back", ex);
+                    throw;
+                }
             }
+            
         }
     }
 }