discount code can't be activated

[Antonella Luongo]

Hi Team 

in the past, it was possible, on my existing quote to activate a discount code.
this was deducted correctly from the already generated quote.

Now, the system generates a new order and I can't activate the quote in the existing one. 

Have adjustments been made in the system? Or is there another procedure?

Thanks for your help 

regards

Antonella