Sales Tax Detail Breakout

Requirement is to have breakout of state, city and local sales taxes (and GST, QST, HST for Canada) on invoices as well as online inquiries.   We recognize capabiltiy to split the ChartFields with Tax Codes.   Has anyone done this?

 There is 'new' table INTFC_BI_TAX which provides capablitiy for mulitple tax rows per bill line but PBooks states - 'Billing ignores any INTFC_BI_TAX entries unless the invoice is fully-paid." .  What then is usage of table for 'full paid' mean?  Can we make use of that table to bring in detail tax info from external billing system?  Note we do intented to process the bill throught the interface and remainder of invoicing and AR processes.