diff --git a/addons/stock/models/stock_quant.py b/addons/stock/models/stock_quant.py
index 870c55887de..9168c1d9e55 100644
--- a/addons/stock/models/stock_quant.py
+++ b/addons/stock/models/stock_quant.py
@@ -263,7 +263,9 @@ class StockQuant(models.Model):
                 lot_id = self.env['stock.lot'].browse(vals.get('lot_id'))
                 package_id = self.env['stock.quant.package'].browse(vals.get('package_id'))
                 owner_id = self.env['res.partner'].browse(vals.get('owner_id'))
-                quant = self._gather(product, location, lot_id=lot_id, package_id=package_id, owner_id=owner_id, strict=True)
+                if not self.env.context.get('import_file'):
+                    # Merge quants later, to make sure one line = one record during batch import
+                    quant = self._gather(product, location, lot_id=lot_id, package_id=package_id, owner_id=owner_id, strict=True)
                 if lot_id:
                     quant = quant.filtered(lambda q: q.lot_id)
                 if quant: