Invoice notification description mismatch

 Hi,

There is difference in invoice notification Main page and "View Additional Invoice Detail" Page for the field "Invoice Description"

Actually the invoice description was updated after approval, so the invoice main page is showing the old description and view additional page showing updated invoice description. 

I assume that the notification main page shows details when it was created and it remains same even though details changed invoice. But view additional page shows the updated information.

Is it the intended functionality to track the changes in invoice after sent for approval ? If it is the case then can you please quote me the "Intended functionality".