diff --git a/account_credit_control/__manifest__.py b/account_credit_control/__manifest__.py
index 3918fffa6..8e860489d 100644
--- a/account_credit_control/__manifest__.py
+++ b/account_credit_control/__manifest__.py
@@ -5,7 +5,7 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 {
     "name": "Account Credit Control",
-    "version": "18.0.2.0.0",
+    "version": "18.0.3.0.0",
     "author": "Camptocamp,"
     "Odoo Community Association (OCA),"
     "Okia,"
diff --git a/account_credit_control/migrations/18.0.3.0.0/post-migration.py b/account_credit_control/migrations/18.0.3.0.0/post-migration.py
new file mode 100644
index 000000000..403485652
--- /dev/null
+++ b/account_credit_control/migrations/18.0.3.0.0/post-migration.py
@@ -0,0 +1,31 @@
+# Copyright 2025 ACSONE SA/NV
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    cr = env.cr
+    if openupgrade.column_exists(cr, "credit_control_line", "channel"):
+        openupgrade.map_values(
+            cr,
+            "channel_old",
+            "channel_letter",
+            [("letter", "t")],
+            table="credit_control_line",
+        )
+        openupgrade.map_values(
+            cr,
+            "channel_old",
+            "channel_email",
+            [("email", "t")],
+            table="credit_control_line",
+        )
+        openupgrade.map_values(
+            cr,
+            "channel_old",
+            "channel_phone",
+            [("phone", "t")],
+            table="credit_control_line",
+        )
diff --git a/account_credit_control/migrations/18.0.3.0.0/pre-migration.py b/account_credit_control/migrations/18.0.3.0.0/pre-migration.py
new file mode 100644
index 000000000..fe901e7c6
--- /dev/null
+++ b/account_credit_control/migrations/18.0.3.0.0/pre-migration.py
@@ -0,0 +1,19 @@
+# Copyright 2025 ACSONE SA/NV
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    # Preserve channel historic data from credit.control.line records
+    if openupgrade.column_exists(env.cr, "credit_control_line", "channel"):
+        openupgrade.copy_columns(
+            env.cr,
+            {
+                "credit_control_line": [
+                    ("channel", "channel_old", None),
+                ]
+            },
+        )