How to setup one bank account shared across Ledgers, across OUs and reconcile the one bank statement

Hello, we have one bank account owned by one Legal Entity, in one ledger, but that is shared across operating units in completely different ledgers. We want to be able to (1) give access to the other OU's to use this bank account, and (2) be able to reconcile this bank account  cash management.

I am able to do #1 -  access to the other OU's to use this bank account. That's not my issue. I accomplished this by creating 3 unique bank records, one for each operating unit. I used the exact bank account number, but assigned a unique Legal Entity, unique Operating Unit name and Unique GL Cash String. I had to do it this way due to the 3 Operating Units are assigned to different Legal Entities and assigned to different Country Ledgers. This is a known Oracle restriction as explained in Oracle DOC ID (