diff --git a/src/main/java/org/gridsuite/modification/server/modifications/NetworkStoreListener.java b/src/main/java/org/gridsuite/modification/server/modifications/NetworkStoreListener.java
index 40a2b08d2..e155587dc 100644
--- a/src/main/java/org/gridsuite/modification/server/modifications/NetworkStoreListener.java
+++ b/src/main/java/org/gridsuite/modification/server/modifications/NetworkStoreListener.java
@@ -104,26 +104,20 @@ private void addSimpleModificationImpact(Identifiable<?> identifiable) {
     }
 
     @Override
-    public void onElementRemoved(Identifiable identifiable, String attribute, Object oldValue) {
+    public void onPropertyRemoved(Identifiable identifiable, String attribute, Object oldValue) {
         addSimpleModificationImpact(identifiable);
     }
 
     @Override
-    public void onElementAdded(Identifiable identifiable, String attribute, Object newValue) {
+    public void onPropertyAdded(Identifiable identifiable, String attribute, Object newValue) {
         addSimpleModificationImpact(identifiable);
     }
 
     @Override
-    public void onElementReplaced(Identifiable identifiable, String attribute, Object oldValue, Object newValue) {
+    public void onPropertyReplaced(Identifiable identifiable, String attribute, Object oldValue, Object newValue) {
         addSimpleModificationImpact(identifiable);
     }
 
-    @Override
-    public void onUpdate(Identifiable identifiable, String attribute, Object oldValue, Object newValue) {
-        addSimpleModificationImpact(identifiable);
-        updateEquipmentIndexation(identifiable, attribute, networkUuid, network.getVariantManager().getWorkingVariantId());
-    }
-
     @Override
     public void onUpdate(Identifiable identifiable, String attribute, String variantId, Object oldValue, Object newValue) {
         addSimpleModificationImpact(identifiable);
@@ -337,8 +331,23 @@ public void onExtensionBeforeRemoval(Extension<?> extension) {
     }
 
     @Override
-    public void onExtensionUpdate(Extension<?> extendable, String attribute, Object oldValue, Object newValue) {
+    public void onExtensionUpdate(Extension<?> extendable, String attribute, String variantId, Object oldValue, Object newValue) {
+        Identifiable<?> identifiable = (Identifiable<?>) extendable.getExtendable();
+        onUpdate(identifiable, attribute, variantId, oldValue, newValue);
+    }
+
+    @Override
+    public void onVariantCreated(String sourceVariantId, String targetVariantId) {
         // FIXME: implement this method
     }
 
+    @Override
+    public void onVariantOverwritten(String sourceVariantId, String targetVariantId) {
+        // FIXME: implement this method
+    }
+
+    @Override
+    public void onVariantRemoved(String variantId) {
+        // FIXME: implement this method
+    }
 }
diff --git a/src/main/java/org/gridsuite/modification/server/service/NetworkVariantsListener.java b/src/main/java/org/gridsuite/modification/server/service/NetworkVariantsListener.java
index 938a17aa9..20a890156 100644
--- a/src/main/java/org/gridsuite/modification/server/service/NetworkVariantsListener.java
+++ b/src/main/java/org/gridsuite/modification/server/service/NetworkVariantsListener.java
@@ -46,10 +46,6 @@ public void beforeRemoval(Identifiable identifiable) {
     public void afterRemoval(String s) {
     }
 
-    @Override
-    public void onUpdate(Identifiable identifiable, String attribute, Object oldValue, Object newValue) {
-    }
-
     @Override
     public void onVariantCreated(String sourceVariantId, String targetVariantId) {
         // Initial variant modifications are not cloned
@@ -64,8 +60,13 @@ public void onVariantRemoved(String variantId) {
     }
 
     @Override
-    public void onUpdate(Identifiable<?> identifiable, String attribute, String variantId, Object oldValue,
-            Object newValue) {
+    public void onVariantOverwritten(String sourceVariantId, String targetVariantId) {
+        equipmentInfosService.deleteVariants(networkUuid, List.of(targetVariantId));
+        onVariantCreated(sourceVariantId, targetVariantId);
+    }
+
+    @Override
+    public void onUpdate(Identifiable<?> identifiable, String attribute, String variantId, Object oldValue, Object newValue) {
         // do nothing
     }
 
@@ -85,8 +86,22 @@ public void onExtensionBeforeRemoval(Extension<?> extension) {
     }
 
     @Override
-    public void onExtensionUpdate(Extension<?> extendable, String attribute, Object oldValue, Object newValue) {
+    public void onExtensionUpdate(Extension<?> extendable, String attribute, String variantId, Object oldValue, Object newValue) {
         // do nothing
     }
 
+    @Override
+    public void onPropertyAdded(Identifiable identifiable, String attribute, Object newValue) {
+        // do nothing
+    }
+
+    @Override
+    public void onPropertyReplaced(Identifiable identifiable, String attribute, Object oldValue, Object newValue) {
+        // do nothing
+    }
+
+    @Override
+    public void onPropertyRemoved(Identifiable identifiable, String attribute, Object oldValue) {
+        // do nothing
+    }
 }