Avoid Reprinting Labels after Modifying Orders
In this case, you need to re-open the order to make a change. If you modify the order at a different POS from the original POS that took the order, the app will print a label for the entire order again.
To address this issue, you must enable the "No Re-Print w/ multiple POS" option in the settings page.
If Order Labels app was installed prior to 9/23/2021, you need to uninstall and reinstall the app.