Hello!
I am using VM-Invoice and I am very pleased by the product, but I have a small issue with it.
When I add a product to an existing order, the Order Total value is modified(the value of the product is added), but in the payment method area the "Total in Payment Currency" stays the same, and I need to manually modify if in the database. I am using VM-standard payment method, and it's the only active payment method on the site.
If somebody has/had this problem and managed to fix it, please let me know.