[FIX] account: matching number

When a journal item duplicated, the matching number is duplicated as
well. This will create inconsistencies in the information displayed to
the user, and moreover it will not allow to reconcile the item anymore.

opw-704902

addons/account/models/account_move.py

@@ -388,7 +388,7 @@ class AccountMoveLine(models.Model):
     statement_id = fields.Many2one('account.bank.statement', string='Statement',
         help="The bank statement used for bank reconciliation", index=True, copy=False)
     reconciled = fields.Boolean(compute='_amount_residual', store=True)
-    full_reconcile_id = fields.Many2one('account.full.reconcile', string="Matching Number")
+    full_reconcile_id = fields.Many2one('account.full.reconcile', string="Matching Number", copy=False)
     matched_debit_ids = fields.One2many('account.partial.reconcile', 'credit_move_id', String='Matched Debits',
         help='Debit journal items that are matched with this journal item.')
     matched_credit_ids = fields.One2many('account.partial.reconcile', 'debit_move_id', String='Matched Credits',
@@ -1358,7 +1358,7 @@ class AccountPartialReconcile(models.Model):
     company_currency_id = fields.Many2one('res.currency', related='company_id.currency_id', readonly=True,
         help='Utility field to express amount currency')
     company_id = fields.Many2one('res.company', related='debit_move_id.company_id', store=True, string='Currency')
-    full_reconcile_id = fields.Many2one('account.full.reconcile', string="Full Reconcile")
+    full_reconcile_id = fields.Many2one('account.full.reconcile', string="Full Reconcile", copy=False)
 
     def create_exchange_rate_entry(self, aml_to_fix, amount_diff, diff_in_currency, currency, move_date):
         """ Automatically create a journal entry to book the exchange rate difference.