EasyRoutes now sends a push notification to drivers whenever a fulfillment event changes the items on any order contained in a route; routes must also be dispatched to (and started by) their driver in order to be eligible for this push notification.
To trigger the notification, route planners must use the Update order data action for a route, after making any fulfillment changes to applicable orders within Shopify. If the driver is actively using the mobile app when the notification is received, they'll be prompted to Refresh the route to reflect the most recent updates.