How to reconcile Fusion GL journal entries to R12 CE in co-existence mode

The proposal is implement FuAH in co-existence with the current EBS R12 but the design is that cash collection and revenue transactions (from the POS and billing systems) are sent to FuAH for accounting and posting to Fusion GL.  So we have a case where the cash management module sits in R12 whilst the reconciling journals are in FuGL. There is a need to reconcile the bank statements in CE to the POS/Billing System journals. I do not see any integration between R12 CE and FuGL for bank reconciliation so what are the options if we persist with this architecture?