Hi there @nerdwithus,
Welcome to the Community, happy to help!
It should be noted that as you transition from your international store down to a domestic store, that you need to be very careful how you transfer the consent of your customers as it is not best practice to transfer consent from one account to another, even if the difference is simply international → domestic. The reason for this is that your international customers only consented to receive marketing from your international store, and not your domestic store.
I would send a campaign to all of your international customers asking if they still want to be subscribed to your marketing as you are closing your international store so they can give explicit opt in. You can ask them to click a link or button on your campaign that will add a property to their profile and you can then create a segment of users who are in your list and have this property to know who has given explicit consent. You can then export this segment and upload it to your Domestic store’s main list.
I can understand that this might seem very manual, however, consent is a very serious implication as it is imperative stay on the right side of customer data !
Hope this helps!
-Taylor