Supplier sites

 Currently on 11i, we are a single org with liability companies and bank accounts belonging to 8 different internal companies.  The current set up is a supplier site for each company.  We are upgrading to R12 in a few months and trying to come up with a better way to consolidate supplier sites.  We need the liability company and pay group company to match on each invoice.  If anyone has a similar situation and has a solution, we would appreciate your feedback.

Many thanks.