Moving AR transactions form one company to another

We currently maintain AR in a separate database from my GL, as it is maintained in a different currency and at startup MC was not available.  There are both receivables transactions (Credit Memos, Debit Memos, and Cash Payments) and SOP Invoices. Inventory is not being used.

We are now migrating the AR to the GL company.  The AR setup has already been done, and the customers with their beginning balances as at the end of July 2016 have already been loaded.  We will be going live starting with August so moving forward is not an issue

The problem is, we would like to carry over all transactions for 2016 into the new company to facilitate reporting or inquiries.  

what is the best way to achieve this?