Not automatically. After the change, the customer is created in Upsales, and its orders and invoices sync when they are created or updated in Fortnox. An older order or invoice syncs the next time it is updated in Fortnox.

To bring in all older orders and invoices at once, save the Fortnox app settings in Upsales and choose Save and start import. This runs the import again for all customers, products, orders and invoices in Fortnox, and can take a while to complete. In Fortnox Premium, the import does not run if Inaktivera initialimport is checked.

In Fortnox Premium, you can sync private customers without changing their type: check Synka privatpersoner från Fortnox in the app settings.