diff --git a/README.rst b/README.rst
index 56450f78e..bacfede3a 100644
--- a/README.rst
+++ b/README.rst
@@ -1,4 +1,14 @@
 Quant merge
 ===========
 
-This module allows to merge diferent quants if they meet some requirements.
\ No newline at end of file
+This module allows to merge diferent quants if they meet some requirements.
+
+
+Credits
+=======
+
+Contributors
+------------
+* Oihane Crucelaegui <oihanecrucelaegi@avanzosc.es>
+* Pedro M. Baeza <pedro.baeza@serviciosbaeza.com>
+* Ana Juaristi <ajuaristo@gmail.com>
\ No newline at end of file
diff --git a/models/stock.py b/models/stock.py
index c269edcb5..8e627413c 100644
--- a/models/stock.py
+++ b/models/stock.py
@@ -19,12 +19,13 @@ class StockQuant(models.Model):
                  ('package_id', '=', self.package_id.id),
                  ('location_id', '=', self.location_id.id),
                  ('reservation_id', '=', False),
-                 ('propagated_from_id', '=', False)])
+                 ('propagated_from_id', '=', self.propagated_from_id.id)])
             qty = cost = 0
             for quant in quants:
-                qty += quant.qty
-                cost += quant.cost
-                quant.unlink()
+                if self._get_latest_move(self) == self._get_latest_move(quant):
+                    qty += quant.qty
+                    cost += quant.cost
+                    quant.unlink()
             self.cost += cost
             self.qty += qty