Consolidate PPM Invoices across Multiple Business Units

Summary:

My client has a requirement to consolidate PPM invoices across multiple Business Units into one invoice, is there any functionality available to support this process?

Content (please ensure you mask any confidential information):

Looking to consolidate invoices across different contracts across different Business Units into one invoice and transfer to AR. For example,

Contract = A, BU = A, Invoice No. 1,2,3

Contract = B, BU = B Invoice No 4,5,6

Consolidate Invoice No. 1,2,3,4,5,6 together to create 1 invoice for BU C

Aware this exact functionality might not be available fully, however, please advise how this requirement could be met even partially? I looked at the option of Balance Forward Billing but it doesn't appear to have the functionality to consolidate invoices across different BU's.