db downgrade does not work with data

backend/gn_module_monitoring/migrations/2003e18f248a_add_type_to_gn_modules.py

@@ -27,10 +27,4 @@ def upgrade():
 
 
 def downgrade():
-    op.execute(
-        """
-        UPDATE gn_commons.t_modules AS tm SET type=NULL
-        FROM gn_monitoring.t_module_complements AS tmc
-        WHERE tm.id_module = tmc.id_module;
-    """
-    )
+    pass

backend/gn_module_monitoring/migrations/362cf9d504ec_create_monitoring_schema.py

@@ -42,6 +42,31 @@ def downgrade():
     op.drop_table("t_visit_complements", schema=monitorings_schema)
 
     # Remove all GNM related objects
+
+    op.execute(
+        """
+        DELETE FROM
+            gn_permissions.t_permissions p
+        USING gn_permissions.t_objects o
+            WHERE
+                p.id_object = o.id_object
+                AND o.code_object like 'GNM_%'
+            ;
+        """
+    )
+
+    op.execute(
+        """
+        DELETE FROM
+            gn_permissions.t_permissions_available p
+        USING gn_permissions.t_objects o
+            WHERE
+                p.id_object = o.id_object
+                AND o.code_object like 'GNM_%'
+            ;
+        """
+    )
+
     statement = sa.delete(TObjects).where(TObjects.code_object.like("GNM_%"))
     op.execute(statement)
 

backend/gn_module_monitoring/migrations/6673266fb79c_remove_id_module_from_sites_complements.py

@@ -70,4 +70,12 @@ def downgrade():
         """
     )
     op.execute(statement)
+
+    statement = sa.text(
+        f"""
+        DELETE FROM gn_monitoring.t_site_complements WHERE id_module IS NULL;
+        """
+    )
+    op.execute(statement)
+
     op.alter_column("t_site_complements", "id_module", nullable=False, schema=monitorings_schema)

backend/gn_module_monitoring/migrations/fc90d31c677f_declare_available_permissions.py

@@ -124,6 +124,18 @@ def downgrade():
         """
     )
 
+    op.execute(
+        """
+        DELETE FROM
+            gn_permissions.t_permissions p
+        USING gn_permissions.t_objects o
+            WHERE
+                p.id_object = o.id_object
+                AND o.code_object = 'TYPES_SITES'
+            ;
+        """
+    )
+
     op.execute(
         """
         DELETE FROM