How do the fields map, if orders are updated in QuickBooks?

Connex will sync the shipping method and tracking details to QuickBooks.

Here is a list:

Shipping Tool	QuickBooks	Notes
Ship Date	Ship Date
Tracking Number	Line item with shipping
Shipping Method	Line item name / description	You can map all shipping methods to a single item. The QuickBooks item name would say shipping, but the real method would map to the line item description.
Shipping Cost	Line item rate	This mapping is optional. You can instruct Connex to send no shipping cost to QuickBooks.

Here is a screenshot: