diff --git a/addons/hr_expense/models/hr_expense.py b/addons/hr_expense/models/hr_expense.py
index 3f7da184698..3466a6c72c0 100644
--- a/addons/hr_expense/models/hr_expense.py
+++ b/addons/hr_expense/models/hr_expense.py
@@ -354,7 +354,8 @@ class HrExpense(models.Model):
             product = default_product
         else:
             expense_description = expense_description.replace(product_code.group(), '')
-            product = self.env['product.product'].search([('default_code', 'ilike', product_code.group(1))]) or default_product
+            products = self.env['product.product'].search([('default_code', 'ilike', product_code.group(1))]) or default_product
+            product = products.filtered(lambda p: p.default_code == product_code.group(1)) or products[0]
 
         pattern = '[-+]?(\d+(\.\d*)?|\.\d+)([eE][-+]?\d+)?'
         # Match the last occurence of a float in the string
diff --git a/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py b/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py
index 73a304daa2e..d9a59cba3a0 100644
--- a/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py
+++ b/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py
@@ -35,6 +35,7 @@ class HrPayslipEmployees(models.TransientModel):
                 'date_from': from_date,
                 'date_to': to_date,
                 'credit_note': run_data.get('credit_note'),
+                'company_id': employee.company_id.id,
             }
             payslips += self.env['hr.payslip'].create(res)
         payslips.compute_sheet()
diff --git a/addons/purchase/models/stock.py b/addons/purchase/models/stock.py
index 4f10e405165..e3fa460f4f1 100644
--- a/addons/purchase/models/stock.py
+++ b/addons/purchase/models/stock.py
@@ -45,7 +45,8 @@ class StockMove(models.Model):
             order = self.purchase_line_id.order_id
             #if the currency of the PO is different than the company one, the price_unit on the move must be reevaluated
             #(was created at the rate of the PO confirmation, but must be valuated at the rate of stock move execution)
-            if order.currency_id != self.company_id.currency_id:
+            #also change when the unit price on the PO line changes in the meantime
+            if order.currency_id != self.company_id.currency_id or self.purchase_line_id.price_unit != self.price_unit:
                 #we don't pass the move.date in the compute() for the currency rate on purpose because
                 # 1) get_price_unit() is supposed to be called only through move.action_done(),
                 # 2) the move hasn't yet the correct date (currently it is the expected date, after
diff --git a/addons/purchase/test/fifo_price.yml b/addons/purchase/test/fifo_price.yml
index 29a6fea4e08..89029799ab7 100644
--- a/addons/purchase/test/fifo_price.yml
+++ b/addons/purchase/test/fifo_price.yml
@@ -3,7 +3,7 @@
 -
   !python {model: res.company}: |
     company = self.env.ref('base.main_company')
-    company.currency_id = self.env.ref('base.EUR')
+    self.env.cr.execute("UPDATE res_company SET currency_id = %s WHERE id = %s", [self.env.ref("base.EUR").id, company.id])
 -
   Set a product as using fifo price
 -
diff --git a/addons/stock_account/views/stock_account_views.xml b/addons/stock_account/views/stock_account_views.xml
index bd817ab8bd3..cea114b735c 100644
--- a/addons/stock_account/views/stock_account_views.xml
+++ b/addons/stock_account/views/stock_account_views.xml
@@ -8,7 +8,7 @@
             <field name="inherit_id" ref="stock.view_inventory_form"/>
             <field name="arch" type="xml">
                 <xpath expr="//field[@name='date']" position="after">
-                    <field name="accounting_date"/>
+                    <field name="accounting_date" attrs="{'readonly':[('state','!=', 'draft')]}"/>
                 </xpath>
             </field>
         </record>
diff --git a/addons/stock_dropshipping/test/lifo_price.yml b/addons/stock_dropshipping/test/lifo_price.yml
index 3cff45c24fa..1d34b828f4d 100644
--- a/addons/stock_dropshipping/test/lifo_price.yml
+++ b/addons/stock_dropshipping/test/lifo_price.yml
@@ -2,7 +2,7 @@
   Set the company currency as EURO for the sake of repeatibility
 -
    !python {model: res.company, id: base.main_company}: |
-    self.write({'currency_id':ref('base.EUR')})
+    self.env.cr.execute("UPDATE res_company SET currency_id = %s WHERE id = %s", [self.env.ref("base.EUR").id, self.id])
 
 - 
   Set product category removal strategy as LIFO 
@@ -116,4 +116,4 @@
   Check standard price became 80 euro
 -
   !python {model: product.product, id: product_lifo_icecream}: |
-    assert self.standard_price == 80.0, 'Price should have been 80 euro'
\ No newline at end of file
+    assert self.standard_price == 80.0, 'Price should have been 80 euro'