diff --git a/backend/geonature/core/gn_meta/mtd/__init__.py b/backend/geonature/core/gn_meta/mtd/__init__.py
index fe119862ab..7364c79ced 100644
--- a/backend/geonature/core/gn_meta/mtd/__init__.py
+++ b/backend/geonature/core/gn_meta/mtd/__init__.py
@@ -215,6 +215,7 @@ def process_af_and_ds(af_list, ds_list, id_role=None):
             CorAcquisitionFrameworkActor,
             "id_acquisition_framework",
             af.id_acquisition_framework,
+            af.unique_acquisition_framework_id,
         )
         # TODO: remove actors removed from MTD
     db.session.commit()
@@ -231,7 +232,13 @@ def process_af_and_ds(af_list, ds_list, id_role=None):
             user_add_total_time += time.time() - start_add_user_time
         ds = sync_ds(ds, list_cd_nomenclature)
         if ds is not None:
-            associate_actors(actors, CorDatasetActor, "id_dataset", ds.id_dataset)
+            associate_actors(
+                actors,
+                CorDatasetActor,
+                "id_dataset",
+                ds.id_dataset,
+                ds.unique_dataset_id,
+            )
 
     user_add_total_time = round(user_add_total_time, 2)
     db.session.commit()
diff --git a/backend/geonature/core/gn_meta/mtd/mtd_utils.py b/backend/geonature/core/gn_meta/mtd/mtd_utils.py
index d2fa5f6639..8d92b01252 100644
--- a/backend/geonature/core/gn_meta/mtd/mtd_utils.py
+++ b/backend/geonature/core/gn_meta/mtd/mtd_utils.py
@@ -219,6 +219,7 @@ def associate_actors(
     CorActor: Union[CorAcquisitionFrameworkActor, CorDatasetActor],
     pk_name: Literal["id_acquisition_framework", "id_dataset"],
     pk_value: str,
+    uuid_mtd: str,
 ):
     """
     Associate actors with either a given :
@@ -237,6 +238,8 @@ def associate_actors(
         - 'id_dataset' for DS
     pk_value : str
         pk value: ID of the AF or DS
+    uuid_mtd : str
+        UUID of the AF or DS
     """
     type_mtd = "AF" if pk_name == "id_acquisition_framework" else "DS"
     for actor in actors: