Yes, when a new supplier is created in Weel and a bill with that supplier is exported to Xero a new supplier is created if no pre-existing supplier can be found.
When a new supplier is created the following information syncs with the contact in Xero:
Please note, we do not populate any other supplier information entered in Weel to the contact in Xero. If a supplier is updated or deleted in Weel this will not be updated in Xero.