Is the new line item in a PO synced to Xero if the initial PO has already been synced? Yes, it will be synced in the same PO when synced to Xero. The bill will be updated in Xero. Related articles If I change the Ship From Location in ShipStation, will it sync back to TradeGecko? Xero - Sync Invoices by Sales Channel How to Assign a Minimum Order Value to a Relationship?