Switching to NetSuite Connector from an Existing Integration
You might have an existing integration outside NetSuite Connector that's syncing your items, orders, or other data. To avoid duplicates or missing items/orders, keep your existing service running while activating NetSuite Connector.
You may not use another service and are following manual steps to keep your items updated or your orders are entered in NetSuite and fulfilled. In this case, you should keep following the procedures mentioned in the NetSuite Connector Deployment to Production section. When activating NetSuite Connector, use some test orders and items to make sure that the functionality works in expected manner. When you're ready to activate NetSuite Connector, deactivate your existing service or stop manual processes before activating the syncs.
When switching to NetSuite Connector, set an order cutoff date to ensure a smooth transition. Also, note the timestamp of the last order posted by your previous integration. Then, select that date and time plus one minute in the Import Orders Created After field on the NetSuite Connector Order Settings page. This ensures that no orders are skipped or duplicated.
NetSuite Connector only imports open (unshipped) orders. Importing already fulfilled orders isn't part of the standard activation process. To import older, already fulfilled orders into NetSuite, use the CSV file import feature.