diff --git a/app/scodoc/sco_formations.py b/app/scodoc/sco_formations.py
index 8aa7c72c..afdcbaee 100644
--- a/app/scodoc/sco_formations.py
+++ b/app/scodoc/sco_formations.py
@@ -35,9 +35,10 @@ from flask import g, url_for, request
 from flask_login import current_user
 
 import app.scodoc.sco_utils as scu
-
 import app.scodoc.notesdb as ndb
+from app import db
 from app import log
+from app.models import Formation, Module
 from app.scodoc import sco_codes_parcours
 from app.scodoc import sco_edit_matiere
 from app.scodoc import sco_edit_module
@@ -103,7 +104,8 @@ def formation_export(
     """Get a formation, with UE, matieres, modules
     in desired format
     """
-    F = formation_list(args={"formation_id": formation_id})[0]
+    formation = Formation.query.get_or_404(formation_id)
+    F = formation.to_dict()
     selector = {"formation_id": formation_id}
     if not export_external_ues:
         selector["is_external"] = False
@@ -111,7 +113,9 @@ def formation_export(
     F["ue"] = ues
     for ue in ues:
         ue_id = ue["ue_id"]
+        ue["reference"] = ue_id  # pour les coefficients
         if not export_ids:
+            del ue["id"]
             del ue["ue_id"]
             del ue["formation_id"]
         if ue["ects"] is None:
@@ -121,17 +125,27 @@ def formation_export(
         for mat in mats:
             matiere_id = mat["matiere_id"]
             if not export_ids:
+                del mat["id"]
                 del mat["matiere_id"]
                 del mat["ue_id"]
             mods = sco_edit_module.module_list({"matiere_id": matiere_id})
             mat["module"] = mods
             for mod in mods:
+                module_id = mod["module_id"]
                 if export_tags:
-                    # mod['tags'] = sco_tag_module.module_tag_list( module_id=mod['module_id'])
                     tags = sco_tag_module.module_tag_list(module_id=mod["module_id"])
                     if tags:
                         mod["tags"] = [{"name": x} for x in tags]
+                #
+                module = Module.query.get(module_id)
+                if module.is_apc():
+                    # Exporte les coefficients
+                    mod["coefficients"] = [
+                        {"ue_reference": str(ue_id), "coef": str(coef)}
+                        for (ue_id, coef) in module.get_ue_coef_dict().items()
+                    ]
                 if not export_ids:
+                    del mod["id"]
                     del mod["ue_id"]
                     del mod["matiere_id"]
                     del mod["module_id"]
@@ -197,6 +211,9 @@ def formation_import_xml(doc: str, import_tags=True):
     ues_old2new = {}  # xml ue_id : new ue_id
     modules_old2new = {}  # xml module_id : new module_id
     # (nb: mecanisme utilise pour cloner semestres seulement, pas pour I/O XML)
+
+    ue_reference_to_id = {}  # pour les coefs APC (map reference -> ue_id)
+    modules_a_coefficienter = []  # Liste des modules avec coefs APC
     # -- create UEs
     for ue_info in D[2]:
         assert ue_info[0] == "ue"
@@ -209,6 +226,9 @@ def formation_import_xml(doc: str, import_tags=True):
         ue_id = sco_edit_ue.do_ue_create(ue_info[1])
         if xml_ue_id:
             ues_old2new[xml_ue_id] = ue_id
+        ue_reference = int(ue_info[1].get("reference"))
+        if ue_reference:
+            ue_reference_to_id[ue_reference] = ue_id
         # -- create matieres
         for mat_info in ue_info[2]:
             assert mat_info[0] == "matiere"
@@ -228,11 +248,27 @@ def formation_import_xml(doc: str, import_tags=True):
                 mod_id = sco_edit_module.do_module_create(mod_info[1])
                 if xml_module_id:
                     modules_old2new[int(xml_module_id)] = mod_id
-                if import_tags:
-                    if len(mod_info) > 2:
-                        tag_names = [t[1]["name"] for t in mod_info[2]]
+                if len(mod_info) > 2:
+                    module = Module.query.get(mod_id)
+                    tag_names = []
+                    ue_coef_dict = {}
+                    for child in mod_info[2]:
+                        if child[0] == "tags" and import_tags:
+                            tag_names.append(child[1]["name"])
+                        elif child[0] == "coefficients":
+                            ue_reference = int(child[1]["ue_reference"])
+                            coef = float(child[1]["coef"])
+                            ue_coef_dict[ue_reference] = coef
+                    if import_tags and tag_names:
                         sco_tag_module.module_tag_set(mod_id, tag_names)
-
+                    if module.is_apc() and ue_coef_dict:
+                        modules_a_coefficienter.append((module, ue_coef_dict))
+    # Fixe les coefs APC (à la fin pour que les UE soient crées)
+    for module, ue_coef_dict_ref in modules_a_coefficienter:
+        # remap ue ids:
+        ue_coef_dict = {ue_reference_to_id[k]: v for (k, v) in ue_coef_dict_ref.items()}
+        module.set_ue_coef_dict(ue_coef_dict)
+    db.session.commit()
     return formation_id, modules_old2new, ues_old2new