diff --git a/source/app/models/main.py b/source/app/models/main.py
index 3ad1ce3..93d4e97 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -4058,7 +4058,10 @@ class WareHouseProduct(BaseModel):
             product = args['product'],
         )
         obj, created = WareHouseProduct.get_or_create(**values)
-        obj.exists += args['cant']
+        cant = args['cant']
+        if created:
+            cant = float(cant)
+        obj.exists += cant
         obj.save()
         return
 
@@ -5120,6 +5123,9 @@ class Facturas(BaseModel):
             values['forma_pago'] = ''
 
         with database_proxy.atomic() as txn:
+
+            print(values)
+
             obj = Facturas.create(**values)
             totals = cls._calculate_totals(cls, obj, productos, tipo_comprobante)
             cls._guardar_relacionados(cls, obj, relacionados)
@@ -5547,7 +5553,7 @@ class Facturas(BaseModel):
                 anticipo = True
             cls._actualizar_saldo_cliente(cls, obj)
             if update:
-                cls._update_inventory(cls, obj)
+                cls._update_inventory(cls, obj, user=user)
             cls._sync(cls, id, rfc)
 
             m = 'T {}'.format(obj.id)
@@ -5823,18 +5829,38 @@ class Facturas(BaseModel):
 
     # ~ v2
     @utils.run_in_thread
-    def _update_inventory(self, invoice, cancel=False):
+    def _update_inventory(self, invoice, cancel=False, user=None):
         if invoice.tipo_comprobante != 'I':
             return
 
+        warehouse = None
+        try:
+            warehouse = user.sucursal.warehouse
+        except:
+            pass
+
         products = FacturasDetalle.get_by_invoice(invoice.id)
         for p in products:
             if p.producto.inventario:
+                cant = Decimal(p.cantidad)
                 if cancel:
-                    p.producto.existencia += Decimal(p.cantidad)
-                else:
-                    p.producto.existencia -= Decimal(p.cantidad)
+                    cant *= -1
+                    # ~ p.producto.existencia += Decimal(p.cantidad)
+                # ~ else:
+                    # ~ p.producto.existencia -= Decimal(p.cantidad)
+                p.producto.existencia -= cant
                 p.producto.save()
+
+                if warehouse is None:
+                    continue
+
+                fields = (
+                    WareHouseProduct.warehouse==warehouse,
+                    WareHouseProduct.product==p,
+                )
+                obj = WareHouseProduct.get(*fields)
+                obj.exists -= cant
+                obj.save()
         return
 
     @utils.run_in_thread