diff --git a/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs b/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
index 2f2e0f43b..d1b334b51 100644
--- a/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
+++ b/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
@@ -192,13 +192,11 @@ public class ActivityRegistry(IActivityDescriber activityDescriber, IEnumerable<
         // Group descriptors by normalized tenant ID
         // Normalize null to "*" so both map to the same agnostic group, avoiding redundant processing
         var descriptorsByTenant = descriptors.GroupBy(d => NormalizeTenantIdForGrouping(d.TenantId));
-        var refreshedRegistries = new HashSet<TenantRegistryData>();
 
         foreach (var group in descriptorsByTenant)
         {
             var tenantId = group.Key;
             var registry = GetOrCreateRegistry(tenantId);
-            refreshedRegistries.Add(registry);
 
             // Remove old descriptors for this provider from this tenant's registry
             if (registry.ProvidedActivityDescriptors.TryGetValue(providerType, out var oldDescriptors))
@@ -219,20 +217,6 @@ public class ActivityRegistry(IActivityDescriber activityDescriber, IEnumerable<
             // Update the provider's descriptor list in this registry
             registry.ProvidedActivityDescriptors[providerType] = providerDescriptors;
         }
-
-        foreach (var registry in GetRegistriesWithProvider(providerType))
-        {
-            if (refreshedRegistries.Contains(registry))
-                continue;
-
-            if (!registry.ProvidedActivityDescriptors.TryRemove(providerType, out var oldDescriptors))
-                continue;
-
-            foreach (var oldDescriptor in oldDescriptors.ToList())
-            {
-                RemoveDescriptor(registry, oldDescriptor);
-            }
-        }
     }
 
     private void Add(ActivityDescriptor? descriptor, TenantRegistryData registry, ICollection<ActivityDescriptor> providerDescriptors)
@@ -322,18 +306,6 @@ public class ActivityRegistry(IActivityDescriber activityDescriber, IEnumerable<
         return registry.ProvidedActivityDescriptors.GetOrAdd(providerType, _ => new List<ActivityDescriptor>());
     }
 
-    private IEnumerable<TenantRegistryData> GetRegistriesWithProvider(Type providerType)
-    {
-        if (_agnosticRegistry.ProvidedActivityDescriptors.ContainsKey(providerType))
-            yield return _agnosticRegistry;
-
-        foreach (var registry in _tenantRegistries.Values)
-        {
-            if (registry.ProvidedActivityDescriptors.ContainsKey(providerType))
-                yield return registry;
-        }
-    }
-
     private static void UpdateLatestDescriptor(TenantRegistryData registry, ActivityDescriptor descriptor)
     {
         registry.LatestActivityDescriptors.AddOrUpdate(
diff --git a/test/unit/Elsa.Workflows.Core.UnitTests/Services/ActivityRegistryTests.cs b/test/unit/Elsa.Workflows.Core.UnitTests/Services/ActivityRegistryTests.cs
index 11f2039f1..916971d1b 100644
--- a/test/unit/Elsa.Workflows.Core.UnitTests/Services/ActivityRegistryTests.cs
+++ b/test/unit/Elsa.Workflows.Core.UnitTests/Services/ActivityRegistryTests.cs
@@ -405,7 +405,7 @@ public class ActivityRegistryTests
     }
 
     [Fact]
-    public async Task RefreshDescriptorsAsync_RemovesLatestDescriptor_WhenProviderDropsTenantGroup()
+    public async Task RefreshDescriptorsAsync_PreservesExistingDescriptors_WhenProviderReturnsNoTenantGroups()
     {
         // Arrange
         var provider = new MutableProvider(
@@ -422,7 +422,7 @@ public class ActivityRegistryTests
         var result = _registry.Find(TestActivityType);
 
         // Assert
-        Assert.Null(result);
+        AssertDescriptor(result, CurrentTenant, 2);
     }