R12 New RC-Ledgers for Existing Primary Ledgers. How best to convert current fiscal year balances.

We have a few non-USD edgers that exist, with current year monthly journals.  We are creating RC Ledgers in another currency (RC-USD) and would like to populate the current fiscal years months(periods)  in the RC Ledger with the correct balances.  It can be Journal level or balance level.

I thought it would be efficient to perform a translation and consolidation from the Primary Ledger to the new RC Ledger for the periods required.  First one as YTD, the remainder as PTD.

Now I see the ""Reporting Currency - Create Opening Balance Journals in Reporting Currency Program", and write up in the GL User Guide.