diff --git a/addons/account/models/reconciliation_widget.py b/addons/account/models/reconciliation_widget.py
index 90c6b254f90..e3bc2630c1d 100644
--- a/addons/account/models/reconciliation_widget.py
+++ b/addons/account/models/reconciliation_widget.py
@@ -24,11 +24,13 @@ class AccountReconciliation(models.AbstractModel):
                 'counterpart_aml_dicts', 'payment_aml_ids' and 'new_aml_dicts',
                 whose value is the same as described in process_reconciliation
                 except that ids are used instead of recordsets.
+            :returns dict: used as a hook to add additional keys.
         """
         st_lines = self.env['account.bank.statement.line'].browse(st_line_ids)
         AccountMoveLine = self.env['account.move.line']
         ctx = dict(self._context, force_price_include=False)
 
+        processed_moves = self.env['account.move']
         for st_line, datum in zip(st_lines, data):
             payment_aml_rec = AccountMoveLine.browse(datum.get('payment_aml_ids', []))
 
@@ -40,10 +42,12 @@ class AccountReconciliation(models.AbstractModel):
                 st_line.write({'partner_id': datum['partner_id']})
 
             ctx['default_to_check'] = datum.get('to_check')
-            st_line.with_context(ctx).process_reconciliation(
+            moves = st_line.with_context(ctx).process_reconciliation(
                 datum.get('counterpart_aml_dicts', []),
                 payment_aml_rec,
                 datum.get('new_aml_dicts', []))
+            processed_moves = (processed_moves | moves)
+        return {'moves': processed_moves}
 
     @api.model
     def get_move_lines_for_bank_statement_line(self, st_line_id, partner_id=None, excluded_ids=None, search_str=False, offset=0, limit=None):
@@ -113,7 +117,7 @@ class AccountReconciliation(models.AbstractModel):
             'value_max': 0,
             'reconciled_aml_ids': [],
         }
-        
+
         if not st_line_ids:
             return results
 
diff --git a/addons/account/static/src/js/reconciliation/reconciliation_model.js b/addons/account/static/src/js/reconciliation/reconciliation_model.js
index 9f667221621..91b200c2d93 100644
--- a/addons/account/static/src/js/reconciliation/reconciliation_model.js
+++ b/addons/account/static/src/js/reconciliation/reconciliation_model.js
@@ -761,6 +761,7 @@ var StatementModel = BasicModel.extend({
                 args: [ids, values],
                 context: self.context,
             })
+            .then(this._validatePostProcess.bind(this))
             .then(function () {
                 return {handles: handles};
             });
@@ -1265,6 +1266,17 @@ var StatementModel = BasicModel.extend({
         if (prop.reconcileModelId) result.reconcile_model_id = prop.reconcileModelId
         return result;
     },
+    /**
+     * Hook to handle return values of the validate's line process.
+     *
+     * @private
+     * @param {Object} data
+     * @param {Object[]} data.moves list of processed account.move
+     * @returns {Deferred}
+     */
+    _validatePostProcess: function (data) {
+        return $.when();
+    },
 });
 
 
diff --git a/addons/account/views/account_view.xml b/addons/account/views/account_view.xml
index b7ffd04d859..500028bfcf5 100644
--- a/addons/account/views/account_view.xml
+++ b/addons/account/views/account_view.xml
@@ -925,7 +925,7 @@
                             <field name="has_second_line" />
                             <label for="has_second_line" string="Add a second line"/>
                         </div>
-                        <group attrs="{'invisible':['|', ('has_second_line', '=', False), '&amp;', ('rule_type', '=', 'invoice_matching'), '|', ('match_total_amount', '=', False), '&amp;', ('match_total_amount', '=', True), ('match_total_amount_param', '=', 100.0)]}">
+                        <group name="second_line" attrs="{'invisible':['|', ('has_second_line', '=', False), '&amp;', ('rule_type', '=', 'invoice_matching'), '|', ('match_total_amount', '=', False), '&amp;', ('match_total_amount', '=', True), ('match_total_amount_param', '=', 100.0)]}">
                             <group>
                                 <field name="second_account_id" string="Account" domain="[('company_id', '=', company_id)]"
                                        attrs="{'required': [('has_second_line', '=', True), '|', ('rule_type', '!=', 'invoice_matching'), '&amp;', '&amp;', ('rule_type', '=', 'invoice_matching'), ('match_total_amount', '=', True), ('match_total_amount_param', '!=', 100.0)]}"/>
diff --git a/addons/test_mail/tests/test_performance.py b/addons/test_mail/tests/test_performance.py
index ff162bb1ecf..50744c54f56 100644
--- a/addons/test_mail/tests/test_performance.py
+++ b/addons/test_mail/tests/test_performance.py
@@ -172,7 +172,7 @@ class TestAdvMailPerformance(TransactionCase):
             'default_res_model': 'mail.test.activity',
         })
 
-        with self.assertQueryCount(__system__=10, emp=16):  # com runbot: 9 - 15 // test_mail only: 10 - 15
+        with self.assertQueryCount(__system__=10, emp=17):  # com runbot: 9 - 15 // test_mail only: 10 - 15
             activity = MailActivity.create({
                 'summary': 'Test Activity',
                 'res_id': record.id,
@@ -191,7 +191,7 @@ class TestAdvMailPerformance(TransactionCase):
     def test_adv_activity_mixin(self):
         record = self.env['mail.test.activity'].create({'name': 'Test'})
 
-        with self.assertQueryCount(__system__=10, emp=16):  # com runbot: 9 - 15 // test_mail only: 10 - 15
+        with self.assertQueryCount(__system__=10, emp=17):  # com runbot: 9 - 15 // test_mail only: 10 - 15
             activity = record.action_start('Test Start')
             #read activity_type to normalize cache between enterprise and community
             #voip module read activity_type during create leading to one less query in enterprise on action_close