Setup notification in background for Flutter App in iOS

Hello, I have a Flutter application with notifications already set up and working. However, on iPhones, when the app is completely closed and a notification arrives, it doesn't redirect to the intended route as I've configured. In contrast, everything works perfectly on Android. It seems that on iOS, the notification data isn't processed correctly when the app is closed. However, when the app is open and a notification is received, the routing functions as expected. I need help resolving this issue on iOS.