OneWorld Subsidiary Structure, Functional Currency

Scenario :

For our organization, USD is the functional/base currency.

At implementation, our subsidiary structure was as follows :

A year after implementation, a single international subsidiary was added, along with an Elimination subsidiary :

Two years later, a generic International subsidiary was created, base currency USD, with 5 child subsidiaries under that international subsidiary, all in their local currencies, along with an Elimination subsidiary :

Last year, it was determined that the existing structure was not functioning as desired, and in an attempt to resolve exchange rate pain points, CTA inaccuracies, etc., was implemented. Five grandchild subsidiaries with base currency of USD were created under the International (grandparent) —> Parent (in local currencies) subs, and a grandchild was added under Sub B with a base currency of USD :