In Shopify, you can merge different accounts into one while containing information from both old accounts.
Merging points
When accounts are merged, all points owned by the 2 accounts will be added to the new account, together with the point allotment history.
Shopify merging all the order history into the new account will also enable tier calculation based on order created by both accounts in the past.
If you face any issues upon customer merge, please contact our support team: easypoints@lunaris.jp