diff --git a/models/account_payment.py b/models/account_payment.py
index e54d137..f4c143b 100644
--- a/models/account_payment.py
+++ b/models/account_payment.py
@@ -9,19 +9,26 @@ class AccountPayment(models.Model):
 
     realization_id = fields.Many2one('hr.expense.realization', string='Originating Realization', readonly=True)
 
+    def _get_hr_expense_base_class(self):
+        """ Returns the hr_expense class in the MRO to jump over it. """
+        mro = type(self).mro()
+        # The module for Odoo's hr_expense override is usually 'odoo.addons.hr_expense'
+        return next((c for c in mro if c.__module__.startswith('odoo.addons.hr_expense')), None)
+
     def action_post(self):
         """
         Confirmation bypass. Calls standard post with skip flag and FORCES a sync
         to ensure deductions are applied to the Journal Entry.
         """
-        # 1. Force a synchronization of the moves right before posting.
-        # We pass 'amount' and 'deduction_line_ids' to trigger vendor_payment_diff_amount.
         self_bypass = self.with_context(skip_expense_lock=True)
         for payment in self_bypass:
             if payment.state == 'draft':
                 payment._synchronize_to_moves({'amount', 'deduction_line_ids', 'amount_substract'})
         
-        # 2. Standard confirmation logic with bypass flag for internal writes
+        # JUMPER: Skip hr_expense's action_post if it exists, or just ensure skip_expense_lock is used globally
+        hr_expense_class = self._get_hr_expense_base_class()
+        if hr_expense_class:
+            return super(hr_expense_class, self.with_context(skip_expense_lock=True)).action_post()
         return super(AccountPayment, self.with_context(skip_expense_lock=True)).action_post()
 
     def _synchronize_to_moves(self, changed_fields):
@@ -31,25 +38,23 @@ class AccountPayment(models.Model):
             if 'amount' not in changed_fields:
                 changed_fields = set(changed_fields) | {'amount'}
 
-        # SURGICAL JUMPER: If we have the bypass flag, we jump over the hr_expense method.
-        if self._context.get('skip_expense_lock'):
-            mro = type(self).mro()
-            hr_expense_class = next((c for c in mro if c.__module__.startswith('odoo.addons.hr_expense')), None)
-            if hr_expense_class:
-                super(hr_expense_class, self)._synchronize_to_moves(changed_fields)
-            else:
-                super()._synchronize_to_moves(changed_fields)
+        # SURGICAL JUMPER: Bypass the hr_expense method's locking check
+        hr_expense_class = self._get_hr_expense_base_class()
+        if self._context.get('skip_expense_lock') and hr_expense_class:
+            super(hr_expense_class, self)._synchronize_to_moves(changed_fields)
         else:
             super()._synchronize_to_moves(changed_fields)
 
         # 2. Custom Deduction Synchronization
         # After base sync, we "fix" the lines if deductions are present
-        for payment in self.with_context(skip_account_move_synchronization=True):
+        # We use with_context(skip_expense_lock=True) for EVERY operation on lines
+        bypass_ctx = {'skip_expense_lock': True, 'skip_account_move_synchronization': True}
+        for payment in self.with_context(**bypass_ctx):
             if payment.amount_substract and payment.amount_substract > 0 and payment.move_id:
                 liquidity_lines, counterpart_lines, writeoff_lines = payment._seek_for_lines()
                 
                 # Adjust liquidity line to final_payment_amount
-                for line in liquidity_lines:
+                for line in liquidity_lines.with_context(skip_expense_lock=True):
                     final_amount = payment.final_payment_amount
                     line_vals = {
                         'amount_currency': -final_amount if payment.payment_type == 'outbound' else final_amount,
@@ -59,15 +64,12 @@ class AccountPayment(models.Model):
                     line.write(line_vals)
 
                 # Deduction lines management
-                # Remove existing deduction lines that are no longer present or need refresh
                 existing_deduction_accounts = payment.deduction_line_ids.mapped('substract_account_id')
-                
-                # We identify deduction lines as those not being liquidity or counterpart
-                # and having an account from the deduction list
                 other_lines = payment.move_id.line_ids - liquidity_lines - counterpart_lines - writeoff_lines
                 to_delete = other_lines.filtered(lambda l: l.account_id.id in existing_deduction_accounts.ids)
                 if to_delete:
-                    to_delete.unlink()
+                    # Pass context to unlink as well
+                    to_delete.with_context(skip_expense_lock=True).unlink()
 
                 # Re-add deduction lines
                 for deduction in payment.deduction_line_ids:
@@ -79,8 +81,6 @@ class AccountPayment(models.Model):
                         payment.date,
                     )
                     
-                    # For outbound (Send Money): Deductions are CREDITS
-                    # For inbound (Receive Money): Deductions are DEBITS (rare but possible)
                     line_vals = {
                         'name': deduction.name or _('Payment Deduction: %s') % deduction.substract_account_id.name,
                         'move_id': payment.move_id.id,
@@ -91,33 +91,25 @@ class AccountPayment(models.Model):
                         'credit': deduction_balance if payment.payment_type == 'outbound' else 0.0,
                         'account_id': deduction.substract_account_id.id,
                     }
-                    payment.env['account.move.line'].with_context(check_move_validity=False).create(line_vals)
+                    payment.env['account.move.line'].with_context(skip_expense_lock=True, check_move_validity=False).create(line_vals)
                 
                 # Force re-balance check
-                payment.move_id._check_balanced()
-
+                payment.move_id.with_context(skip_expense_lock=True)._check_balanced()
 
     def _synchronize_from_moves(self, changed_fields):
         # 1. Standard sync with jumper support
-        if self._context.get('skip_expense_lock'):
-            mro = type(self).mro()
-            hr_expense_class = next((c for c in mro if c.__module__.startswith('odoo.addons.hr_expense')), None)
-            if hr_expense_class:
-                super(hr_expense_class, self)._synchronize_from_moves(changed_fields)
-            else:
-                super()._synchronize_from_moves(changed_fields)
+        hr_expense_class = self._get_hr_expense_base_class()
+        if self._context.get('skip_expense_lock') and hr_expense_class:
+            super(hr_expense_class, self)._synchronize_from_moves(changed_fields)
         else:
             super()._synchronize_from_moves(changed_fields)
 
         # 2. Custom Deduction Restoration
-        # If we have deductions, we must restore the gross amount from the move counterpart lines,
-        # because the bank line (which base Odoo syncs from) only contains final_payment_amount.
-        for payment in self.with_context(skip_account_move_synchronization=True):
+        for payment in self.with_context(skip_expense_lock=True, skip_account_move_synchronization=True):
             if payment.amount_substract and payment.amount_substract > 0 and payment.move_id:
                 liquidity_lines, counterpart_lines, writeoff_lines = payment._seek_for_lines()
                 non_liquidity_lines = counterpart_lines + writeoff_lines
                 
-                # Gross amount is sum of counterparts that balance the liquidity
                 if payment.payment_type == 'outbound':
                     gross_lines = non_liquidity_lines.filtered(lambda l: l.debit > 0)
                 else:
@@ -132,18 +124,27 @@ class AccountPayment(models.Model):
                             (correct_gross_amount, payment.id)
                         )
                         payment.invalidate_recordset(['amount'])
-                        # Ensure computed fields are re-evaluated
                         payment._compute_final_payment_amount()
 
-
     def write(self, vals):
-        # Propagate bypass flag during writes to avoid locked checks
+        # Propagate bypass flag during writes
+        # If we have the flag, we jump over hr_expense to avoid its 'linked to expense' error
+        hr_expense_class = self._get_hr_expense_base_class()
+        if hr_expense_class and self._context.get('skip_expense_lock'):
+            return super(hr_expense_class, self).write(vals)
+
         if self.expense_sheet_id and self.state == 'draft':
             return super(AccountPayment, self.with_context(skip_expense_lock=True)).write(vals)
         return super().write(vals)
 
     def action_cancel(self):
-        res = super().action_cancel()
+        # Bypass locks for cancellations as well
+        hr_expense_class = self._get_hr_expense_base_class()
+        if hr_expense_class:
+            res = super(hr_expense_class, self.with_context(skip_expense_lock=True)).action_cancel()
+        else:
+            res = super().action_cancel()
+
         for payment in self:
             if payment.expense_sheet_id:
                 payment.expense_sheet_id.invalidate_recordset(['state'])
@@ -152,10 +153,17 @@ class AccountPayment(models.Model):
         return res
 
     def action_draft(self):
-        res = super().action_draft()
+        # Bypass locks for resetting to draft
+        hr_expense_class = self._get_hr_expense_base_class()
+        if hr_expense_class:
+            res = super(hr_expense_class, self.with_context(skip_expense_lock=True)).action_draft()
+        else:
+            res = super().action_draft()
+
         for payment in self:
             if payment.expense_sheet_id:
                 payment.expense_sheet_id.invalidate_recordset(['state'])
             if payment.realization_id and payment.realization_id.expense_sheet_id:
                 payment.realization_id.expense_sheet_id.invalidate_recordset(['state'])
         return res
+