diff --git a/script/config/config_file.py b/script/config/config_file.py
index 878ea4a..1885c96 100644
--- a/script/config/config_file.py
+++ b/script/config/config_file.py
@@ -5,6 +5,7 @@
 import json
 import logging
 import os
+from typing import Any, Dict, Literal, Mapping
 
 CONFIG_FILE = "./script/todo/todo.json"
 CONFIG_OVERRIDE_FILE = "./private/todo/todo_override.json"
@@ -23,34 +24,74 @@ _logger = logging.getLogger(__name__)
 
 
 class ConfigFile:
-    def get_config(self, lst_params):
-        # Open file
-        config_file = CONFIG_FILE
-        if os.path.exists(CONFIG_OVERRIDE_FILE):
-            config_file = CONFIG_OVERRIDE_FILE
+    def get_config(self, key_param: str):
+        # Open file and update dct_data
+        dct_data_init = {}
+        dct_data_second = {}
+        dct_data_final = {}
+
+        if os.path.exists(CONFIG_FILE):
+            with open(CONFIG_FILE) as cfg:
+                dct_data_init = json.load(cfg)
+
+        if os.path.exists(CONFIG_OVERRIDE_FILE):
+            with open(CONFIG_OVERRIDE_FILE) as cfg:
+                dct_data_second = json.load(cfg)
 
-        find_in_private = False
         if os.path.exists(CONFIG_OVERRIDE_PRIVATE_FILE):
             with open(CONFIG_OVERRIDE_PRIVATE_FILE) as cfg:
-                dct_data = json.load(cfg)
-                for param in lst_params:
-                    if param in dct_data.keys():
-                        find_in_private = True
-                        dct_data = dct_data[param]
+                dct_data_final = json.load(cfg)
 
-        if not find_in_private:
-            with open(config_file) as cfg:
-                dct_data = json.load(cfg)
-                for param in lst_params:
-                    try:
-                        dct_data = dct_data[param]
-                    except KeyError:
-                        _logger.error(
-                            f"KeyError on file {config_file} with keys"
-                            f" {lst_params}"
-                        )
-                        return {}
+        dct_data_first_merge = self.deep_merge_with_lists(
+            dct_data_init, dct_data_final, list_strategy="extend"
+        )
+        dct_data = self.deep_merge_with_lists(
+            dct_data_first_merge, dct_data_second, list_strategy="extend"
+        )
+
+        return dct_data.get(key_param)
+
+    def get_config_value(self, lst_params: list):
+        dct_data = self.get_config(lst_params[0])
+        for param in lst_params[1:]:
+            if param in dct_data.keys():
+                find_in_private = True
+                dct_data = dct_data.get(param)
         return dct_data
 
     def get_logo_ascii_file_path(self):
         return LOGO_ASCII_FILE
+
+    def deep_merge_with_lists(
+        self,
+        dest: Mapping[str, Any],
+        src: Mapping[str, Any],
+        list_strategy: Literal["replace", "extend"] = "replace",
+    ) -> Dict[str, Any]:
+        result: Dict[str, Any] = {}
+        for k, v in dest.items():
+            result[k] = v.copy() if isinstance(v, dict) else v
+
+        for k, v in src.items():
+            if (
+                k in result
+                and isinstance(result[k], dict)
+                and isinstance(v, dict)
+            ):
+                result[k] = self.deep_merge_with_lists(
+                    result[k], v, list_strategy
+                )
+            elif (
+                k in result
+                and isinstance(result[k], list)
+                and isinstance(v, list)
+                and list_strategy == "extend"
+            ):
+                # on étend : dest_list + src_list
+                result[k] = result[k] + v
+            elif k in result and isinstance(result[k], str):
+                if v:
+                    result[k] = v
+            else:
+                result[k] = v
+        return result
diff --git a/script/selenium/selenium_lib.py b/script/selenium/selenium_lib.py
index 1314b19..eda9f42 100644
--- a/script/selenium/selenium_lib.py
+++ b/script/selenium/selenium_lib.py
@@ -397,7 +397,9 @@ class SeleniumLib(object):
             return self.kdbx
         print("Open KDBX")
         # Open file
-        chemin_fichier_kdbx = self.config_file.get_config(["kdbx", "path"])
+        chemin_fichier_kdbx = self.config_file.get_config_value(
+            ["kdbx", "path"]
+        )
         if not chemin_fichier_kdbx:
             root = tk.Tk()
             root.withdraw()  # Hide the main window
@@ -409,7 +411,9 @@ class SeleniumLib(object):
             # _logger.error(f"KDBX is not configured, please fill {CONFIG_FILE}")
             return
 
-        mot_de_passe_kdbx = self.config_file.get_config(["kdbx", "password"])
+        mot_de_passe_kdbx = self.config_file.get_config_value(
+            ["kdbx", "password"]
+        )
         if not mot_de_passe_kdbx:
             mot_de_passe_kdbx = getpass.getpass(
                 prompt="Entrez votre mot de passe : "
diff --git a/script/todo/todo.py b/script/todo/todo.py
index fcae315..572b94c 100755
--- a/script/todo/todo.py
+++ b/script/todo/todo.py
@@ -153,7 +153,9 @@ class TODO:
         if self.kdbx:
             return self.kdbx
         # Open file
-        chemin_fichier_kdbx = self.config_file.get_config(["kdbx", "path"])
+        chemin_fichier_kdbx = self.config_file.get_config_value(
+            ["kdbx", "path"]
+        )
         if not chemin_fichier_kdbx:
             root = tk.Tk()
             root.withdraw()  # Hide the main window
@@ -167,7 +169,9 @@ class TODO:
             )
             return
 
-        mot_de_passe_kdbx = self.config_file.get_config(["kdbx", "password"])
+        mot_de_passe_kdbx = self.config_file.get_config_value(
+            ["kdbx", "password"]
+        )
         if not mot_de_passe_kdbx:
             mot_de_passe_kdbx = getpass.getpass(
                 prompt="Entrez votre mot de passe : "
@@ -191,7 +195,7 @@ class TODO:
             kp = self.get_kdbx()
             if not kp:
                 return
-            nom_configuration = self.config_file.get_config(
+            nom_configuration = self.config_file.get_config_value(
                 ["kdbx_config", "openai", "kdbx_key"]
             )
             entry = kp.find_entries_by_title(nom_configuration, first=True)
@@ -445,7 +449,7 @@ class TODO:
         # TODO proposer le déploiement à distance
         # TODO proposer l'exécution de docker
         # TODO proposer la création de docker
-        lst_instance = self.config_file.get_config(["instance"])
+        lst_instance = self.config_file.get_config("instance")
         help_info = self.fill_help_info(lst_instance)
 
         while True:
@@ -474,7 +478,7 @@ class TODO:
                     print("Commande non trouvée 🤖!")
 
     def prompt_execute_fonction(self):
-        lst_instance = self.config_file.get_config(["function"])
+        lst_instance = self.config_file.get_config("function")
         help_info = self.fill_help_info(lst_instance)
 
         while True:
@@ -506,7 +510,7 @@ class TODO:
         # TODO faire la mise à jour de ERPLibre
         # TODO faire l'upgrade d'un odoo vers un autre
 
-        lst_instance = self.config_file.get_config(["update_from_makefile"])
+        lst_instance = self.config_file.get_config("update_from_makefile")
         dct_upgrade_odoo_database = {
             "prompt_description": "Upgrade Odoo - Migration Database",
         }
@@ -554,7 +558,7 @@ class TODO:
         #         [0] Retour
         # """
 
-        lst_instance = self.config_file.get_config(["code_from_makefile"])
+        lst_instance = self.config_file.get_config("code_from_makefile")
         dct_upgrade_odoo_database = {
             "prompt_description": "Upgrade Module",
         }
diff --git a/script/todo/todo_upgrade.py b/script/todo/todo_upgrade.py
index e58f7b7..cc40b99 100755
--- a/script/todo/todo_upgrade.py
+++ b/script/todo/todo_upgrade.py
@@ -76,17 +76,18 @@ class TodoUpgrade:
     def execute_module_upgrade(self):
         print("Welcome to Odoo module upgrade processus with ERPLibre 🤖")
 
-        with open(UPGRADE_DATABASE_CONFIG_LOG, "r") as f:
-            try:
-                old_dct_progression = json.load(f)
-                self.dct_progression = old_dct_progression
-                self.lst_command_executed = old_dct_progression.get(
-                    "command_executed"
-                )
-            except json.decoder.JSONDecodeError:
-                print(
-                    f'⚠️ The config file "{UPGRADE_DATABASE_CONFIG_LOG}" is invalid, ignore it.'
-                )
+        if os.path.exists(UPGRADE_DATABASE_CONFIG_LOG):
+            with open(UPGRADE_DATABASE_CONFIG_LOG, "r") as f:
+                try:
+                    old_dct_progression = json.load(f)
+                    self.dct_progression = old_dct_progression
+                    self.lst_command_executed = old_dct_progression.get(
+                        "command_executed"
+                    )
+                except json.decoder.JSONDecodeError:
+                    print(
+                        f'⚠️ The config file "{UPGRADE_DATABASE_CONFIG_LOG}" is invalid, ignore it.'
+                    )
 
         print(
             "Migrate a directory repo to migrate all module, or select a directory module."