diff --git a/line.py b/line.py
index 5c6dd01..d0dfc75 100644
--- a/line.py
+++ b/line.py
@@ -349,20 +349,7 @@ class Line(SecondCurrencyMixin, Workflow, ModelSQL, ModelView):
             if line.reference is None:
                 if line.bookingtype in ['mvout', 'mvin']:
                     # in case of 'mvin' or 'mvout' - add counterpart
-                    values = {
-                        'cashbook': line.booktransf.id,
-                        'bookingtype': 'mvin' if line.bookingtype == 'mvout' else 'mvout',
-                        'date': line.date,
-                        'description': line.description,
-                        'booktransf': line.cashbook.id,
-                        'reference': line.id,
-                        'amount': line.amount \
-                            if line.currency.id == line.booktransf.currency.id \
-                            else line.amount_2nd_currency,
-                        'amount_2nd_currency': line.amount \
-                            if line.currency.id != line.booktransf.currency.id \
-                            else None,
-                        }
+                    values = cls.get_counterpart_values(line)
                     values.update(cls.get_debit_credit(values))
                     to_create_line.append(values)
                 elif line.bookingtype in ['spout', 'spin']:
@@ -371,23 +358,18 @@ class Line(SecondCurrencyMixin, Workflow, ModelSQL, ModelView):
                         if sp_line.splittype != 'tr':
                             continue
 
-                        values = {
+                        values = cls.get_counterpart_values(line, {
                             'cashbook': sp_line.booktransf.id,
-                            'date': line.date,
                             'description': sp_line.description,
-                            'booktransf': line.cashbook.id,
-                            'reference': line.id,
                             'amount': sp_line.amount \
                                 if sp_line.currency.id == sp_line.booktransf.currency.id \
                                 else sp_line.amount_2nd_currency,
                             'amount_2nd_currency': sp_line.amount \
                                 if sp_line.currency.id != sp_line.booktransf.currency.id \
                                 else None,
-                            }
-                        if line.bookingtype.endswith('out'):
-                            values['bookingtype'] = 'mvin'
-                        else :
-                            values['bookingtype'] = 'mvout'
+                            'bookingtype': 'mvin' \
+                                if line.bookingtype.endswith('out') else 'mvout',
+                            })
                         values.update(cls.get_debit_credit(values))
                         to_create_line.append(values)
 
@@ -784,6 +766,32 @@ class Line(SecondCurrencyMixin, Workflow, ModelSQL, ModelView):
             values2['category'] = None
         return values2
 
+    @classmethod
+    def get_counterpart_values(cls, line, values={}):
+        """ get values to create counter-part of
+            transfer booking
+        """
+        line_currency = getattr(line.currency, 'id', None)
+        booktransf_currency = getattr(getattr(line.booktransf, 'currency', {}), 'id', None)
+
+        result = {
+            'cashbook': getattr(line.booktransf, 'id', None),
+            'bookingtype': 'mvin' if line.bookingtype == 'mvout' else 'mvout',
+            'date': line.date,
+            'description': line.description,
+            'booktransf': line.cashbook.id,
+            'reference': line.id,
+            'amount': line.amount \
+                if line_currency == booktransf_currency \
+                else line.amount_2nd_currency,
+            'amount_2nd_currency': line.amount \
+                if line_currency != booktransf_currency \
+                else None,
+            }
+        # update values from 'values'
+        result.update(values)
+        return result
+
     @classmethod
     def get_debit_credit(cls, values):
         """ compute debit/credit from amount