looking ways to update the Geography data for all the countries

Summary:

We are looking ways to update the Geography data for all the countries which have been imported using Loqate information.

We understand that once imported, geography data, it cannot be reimported and as below documentation the hierarchy needs to be deleted and imported again.
https://docs.oracle.com/en/cloud/saas/applications-common/25c/facia/replace-existing-master-geography-data-with-revised-oracle.html#s20048866

Content (please ensure you mask any confidential information):

What steps need to performed so that existing open transactions will not break or be impacted if country data is reloaded. This includes verifying what would happen to open orders or invoices already mapped to specific locations