Request for Accts Receivable Sub ledger 'as at' date

Summary

Request for Accts Receivable Sub ledger 'as at' date for fiscal year end audit

Content

External auditors require an AR sub ledger showing invoices unpaid, and credit memos unused, as at a past date (our fiscal year end).  Unable to produce in OTBI.  Looking for AR equivalent of the Payables Trial Balance report, which can be run using an as at date.  Is anyone aware of how we might produce this data (release 12).