Split Billing with Electronic Billing

SUGGESTED

I have 2 different insurance carries that I need to split a bill with. Each entity is paying 50% of the bill.  However, when I try to export the bills in LEDES 1998B format, it exports both clients.  Of if I try to export just the secondary client, it only has the primary client information on it. Is there anyway to make this work?  Or do I have to manually just split the bills?