Changing price not affected on pdf invoice

Hi, I have problem with PDF invoice, when I print invoice PDF, Then I change price or other cost this saved without problem, But when I want to print modified PDF, Changing in price not affected on new PDF... I did clear cache and Delete PDF in Content/File folder, but the problem exit, And I could not get modified PDF invoice.

We'll investigate it (a work item). I presume it's causes by browse caching on your side because the PDF file has the same name for each request. Try to click F5 when the document is loaded in your browser

Thanks Andrei ...
Lets clarify this problem, We can edit PDF invoice in Product tabs (in Edit order detail), but this section do not have any field for order shipping cost and I think this is important, For Example one customer select wrong shipping method and we want change shipping cost, or for some customers we want add more shipping cost. More important changing price in this section does not effect on store profit and total revenue.  
We can edit order in info tabs that have all option such as shipping cost, tax,... and changing this values effects on store revenue, but this section did not effect on PDF invoice.