How to handle parent entity move from a USD parent to an AUD parent

Summary:

What's the best way to handle the below scenario:

Content (please ensure you mask any confidential information):

When Entity is disposed from one parent and acquired by another parent (make the old entity 0% ownership and the new one 100% or as the business requires) however parent entity move from a USD parent to an AUD parent and we won't find the parent currency data in AUD for that particular entity anywhere to copy from Closing Balance as opening Balance is zero for newly created entity.

Version (include the version you are using, if applicable):

NA

Code Snippet (add any code snippets that support your topic, if applicable):