I have an online business that uses 7 different Shopify stores to serve customers using different currencies in different regions. Hypothetical examples:

- shopusa.mystore.com

- shopuk.mystore.com

When I set the "auto-return URL" in PayPal to return customers to my store thank you page, the best guidance I can find, since Shopify thank you page URLs are dynamic, is to simply put "/checkout/thank_you/".

1) Is that in fact the correct auto-return URL?

2) Since I have multiple Shopify stores integrated with PayPal, can I be sure that URL will send the customer back to the correct sub-domain?

Thanks all in advance.

- AA