In the Fiori is not possible with the latest version of GTS E4H 2023, only if you export in excel and you split the cells. Check customer influence portal if such request exist from other customer and vote. If not, I recommend to submit a new request...
Adding your article to spare some time for our readers.
https://blogs.sap.com/2023/05/02/brown-blue-or-green-how-to-move-to-sap-global-trade-services-edition-for-sap-hana/?url_id=text-global-profile-inbox-bp-new-in-tag-followed
Thanks for the great...