diff --git a/account_payment_partner/models/account_move.py b/account_payment_partner/models/account_move.py
index 949435ec3..9c4ee6112 100644
--- a/account_payment_partner/models/account_move.py
+++ b/account_payment_partner/models/account_move.py
@@ -33,6 +33,10 @@ class AccountMove(models.Model):
         ondelete="restrict",
         readonly=False,
     )
+    has_reconciled_items = fields.Boolean(
+        help="Technical field for supporting the editability of the payment mode",
+        compute="_compute_has_reconciled_items",
+    )
 
     @api.depends("move_type")
     def _compute_payment_mode_filter_type_domain(self):
@@ -83,6 +87,17 @@ class AccountMove(models.Model):
                             partner.supplier_payment_mode_id.refund_payment_mode_id
                         )
 
+    @api.depends("line_ids.matched_credit_ids", "line_ids.matched_debit_ids")
+    def _compute_has_reconciled_items(self):
+        for record in self:
+            lines_to_consider = record.line_ids.filtered(
+                lambda x: x.account_id.internal_type in ("receivable", "payable")
+            )
+            record.has_reconciled_items = bool(
+                lines_to_consider.matched_credit_ids
+                + lines_to_consider.matched_debit_ids
+            )
+
     @api.onchange("partner_id")
     def _onchange_partner_id(self):
         """Force compute because the onchange chain doesn't call
diff --git a/account_payment_partner/tests/test_account_payment_partner.py b/account_payment_partner/tests/test_account_payment_partner.py
index 6f2acd5a6..bdf4d0204 100644
--- a/account_payment_partner/tests/test_account_payment_partner.py
+++ b/account_payment_partner/tests/test_account_payment_partner.py
@@ -298,6 +298,10 @@ class TestAccountPaymentPartner(SavepointCase):
         mode = self.supplier_payment_mode.copy()
         aml.payment_mode_id = mode
         self.assertEqual(invoice.payment_mode_id, mode)
+        # Test payment mode editability on account move
+        self.assertFalse(invoice.has_reconciled_items)
+        invoice.payment_mode_id = self.supplier_payment_mode
+        self.assertEqual(aml.payment_mode_id, self.supplier_payment_mode)
 
     def test_invoice_create_out_invoice(self):
         invoice = self._create_invoice(
diff --git a/account_payment_partner/views/account_move_view.xml b/account_payment_partner/views/account_move_view.xml
index 46d0e6aca..a65636ebe 100644
--- a/account_payment_partner/views/account_move_view.xml
+++ b/account_payment_partner/views/account_move_view.xml
@@ -28,8 +28,9 @@
                     name="payment_mode_id"
                     domain="[('payment_type', '=', payment_mode_filter_type_domain), ('company_id', '=', company_id)]"
                     widget="selection"
-                    attrs="{'readonly': [('state', '!=', 'draft')], 'invisible': [('move_type', 'not in', ('out_invoice','out_refund','in_invoice','in_refund'))]}"
+                    attrs="{'readonly': [('has_reconciled_items', '=', True)], 'invisible': [('move_type', 'not in', ('out_invoice','out_refund','in_invoice','in_refund'))]}"
                 />
+                <field name="has_reconciled_items" invisible="1" />
                 <field name="commercial_partner_id" invisible="1" />
                 <field name="bank_account_required" invisible="1" />
                 <field name="payment_mode_filter_type_domain" invisible="1" />