=back
-Customer info at invoice generation time
+Deprecated fields
=over 4
-=item billing_balance - the customer's balance at the time the invoice was
-generated (not including charges on this invoice)
+=item billing_balance - the customer's balance immediately before generating
+this invoice. DEPRECATED. Use the L<FS::cust_main/balance_date> method
+to determine the customer's balance at a specific time.
-=item previous_balance - the billing_balance of this customer's previous
-invoice plus the charges on that invoice
+=item previous_balance - the customer's balance immediately after generating
+the invoice before this one. DEPRECATED.
-=back
-
-Deprecated
-
-=over 4
-
-=item printed - deprecated
+=item printed - formerly used to track the number of times an invoice had
+been printed; no longer used.
=back