diff --git a/src/main/java/org/gridsuite/modification/server/repositories/NetworkModificationRepository.java b/src/main/java/org/gridsuite/modification/server/repositories/NetworkModificationRepository.java
index eb2f06e16..f64ce4575 100644
--- a/src/main/java/org/gridsuite/modification/server/repositories/NetworkModificationRepository.java
+++ b/src/main/java/org/gridsuite/modification/server/repositories/NetworkModificationRepository.java
@@ -128,7 +128,7 @@ public List<ModificationInfos> getModifications(UUID groupUuid, boolean onlyMeta
         }
     }
 
-    private List<ModificationInfos> getModificationsMetadata(UUID groupUuid, boolean stashedModifications) {
+    public List<ModificationInfos> getModificationsMetadata(UUID groupUuid, boolean stashedModifications) {
         return modificationRepository
                 .findAllBaseByGroupId(getModificationGroup(groupUuid).getId())
                 .stream()
@@ -206,7 +206,7 @@ public List<ModificationEntity> getModificationsEntities(@NonNull List<UUID> uui
 
     @Transactional(readOnly = true)
     public List<ModificationEntity> copyModificationsEntities(@NonNull UUID groupUuid) {
-        return getModificationEntityStream(groupUuid).map(ModificationEntity::copy).collect(Collectors.toList());
+        return getModificationEntityStream(groupUuid).filter(m -> !m.getStashed()).map(ModificationEntity::copy).collect(Collectors.toList());
     }
 
     @Transactional
diff --git a/src/test/java/org/gridsuite/modification/server/ModificationControllerTest.java b/src/test/java/org/gridsuite/modification/server/ModificationControllerTest.java
index c982ae761..1e800d2c8 100644
--- a/src/test/java/org/gridsuite/modification/server/ModificationControllerTest.java
+++ b/src/test/java/org/gridsuite/modification/server/ModificationControllerTest.java
@@ -756,12 +756,30 @@ public void testDuplicateModificationGroup() throws Exception {
         assertApplicationStatusOK(mvcResult);
         testNetworkModificationsCount(TEST_GROUP_ID, 5);
 
-        //test copy group
+        // get list of modifications
+        List<ModificationInfos> modifications = modificationRepository.getModifications(TEST_GROUP_ID, true, true, false);
+        assertEquals(5, modifications.size());
+        //stash the first modification
+        String uuidString = modifications.get(0).getUuid().toString();
+
+        mockMvc.perform(post(URI_NETWORK_MODIF_BASE + "/stash")
+                        .queryParam("groupUuid", TEST_GROUP_ID.toString())
+                        .queryParam("uuids", uuidString))
+                .andExpect(status().isOk());
+        List<ModificationInfos> stashedModifications = modificationRepository.getModificationsMetadata(TEST_GROUP_ID, true);
+        List<ModificationInfos> modificationAfterStash = modificationRepository.getModificationsMetadata(TEST_GROUP_ID, false);
+        assertEquals(1, stashedModifications.size());
+        assertEquals(4, modificationAfterStash.size());
+
+        //test copy group with stashed modification
         UUID newGroupUuid = UUID.randomUUID();
         String uriStringGroups = "/v1/groups?groupUuid=" + newGroupUuid + "&duplicateFrom=" + TEST_GROUP_ID + "&reportUuid=" + UUID.randomUUID();
         mockMvc.perform(post(uriStringGroups)).andExpect(status().isOk());
-
-        testNetworkModificationsCount(newGroupUuid, 5);
+        List<ModificationInfos> stashedCopiedModifications = modificationRepository.getModificationsMetadata(newGroupUuid, true);
+        List<ModificationInfos> copiedModifications = modificationRepository.getModificationsMetadata(newGroupUuid, false);
+        assertEquals(0, stashedCopiedModifications.size());
+        assertEquals(4, copiedModifications.size());
+        testNetworkModificationsCount(newGroupUuid, 4);
     }
 
     @Test