Both work, and the choice depends on what you care about keeping.
Reconnect in the same organization
You disconnect the old store from Integrations and connect the new one. You keep the account and the plan, but you have to set everything up again —product costs, shipping, fees— because settings belong to each store.
Create a new organization
You keep the old store's historical data in its organization, and the new one starts from scratch. If you prefer this route, write to us and we'll transfer the plan to the new organization.
Either way you log in with the same user, and you can switch between brands or use the combined view from the bottom-left corner. Keep in mind that each organization has its own plan.
If you changed platforms
The old platform's history isn't shown on the new one's dashboard. Write to us with your organization ID: we'll disconnect the old one and set the new one as primary, so the Products section stops showing the old store. If you just disconnect a store without migrating, the history of orders already synced isn't lost.