Add Deprecated Invoice Merge Field Back - Payment.CreditCardNumberMasked

[jdande]

The Invoice merge field, Payment.CreditCardNumberMasked was deprecated, and now there is no way to make the last four digits of the credit card used to pay the due amount of an invoice visible - please make this possible once more. 

[Alexis]

The Payment fields are no longer listed as deprecated fields and Payment.CreditCardNumberMasked has been made usable again. For a complete list of available invoice merge fields see the Knowledge Center page on Merge Fields for Invoices.