Custom chat but push notification sends user to old chat page

I created a new chat widget but it uses the same database as the original chat template.
In the original chat template, it doesn't let you customize the chat and it's why I created my own custom chat. However, when a chat is sent from my new chat widget, a push notification is sent (from the settings of the original chat) which when the user clicks the notification, it takes them to the old chat widget. How or where do I change the landing page settings in the push notification to land on the new chat page?

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