Hey guys,
I have been trying to figure this out and was hoping someone may be of some help in answering this. Your help is appreciated.
I just setup a new payment gateway. I already had a gateway in whmcs setup and working. I am wanting to replace the old gateway for credit cards with the new one (I can't deactivate it since it is assigned to customers already). Do I have to manually edit each invoice? In adition as they are generated what will set them to use the new one?
Thanks