RMA Credit memo application against consolidated invoice

As part of 26A, Consolidated invoice feature was released. We would like to understand behavior of credit memo application against consolidated invoice. Below is the example

Original Order:

1 Hardware line -- Fulfillment 1 (Qty=2)

1 Service Line tied to Hardware -- Fulfillment 1 (Qty=2)

Return Order: (Return Qty=2)

RMA1:

1 Hardware line -- Fulfillment 3 (Qty=1)

1 Service Line tied to Hardware -- Fulfillment 3 (Qty=1)

RMA2:

1 Hardware line -- Fulfillment 4 (Qty=1)

1 Service Line tied to Hardware -- Fulfillment 4 (Qty=1)

Consolidated Invoice:

1 Hardware line -- Qty 2

1 Service Line — Qty 2

How is Credit Memo created and applied against consolidated invoice?