A: No. Only the invoice address is synced.
When an order reaches 100% probability, Upsales creates or updates the company in Visma eEkonomi with its name, org. no. and invoice address (street, zip code, city and country). The sync goes one way, from Upsales to Visma eEkonomi. A delivery address entered directly in Visma eEkonomi stays there and is not overwritten by the sync.
The company must have an org. no. and an invoice address with street, zip code and city. Otherwise the order is not synced.