Transferring an app uses push notification, from one developer account to another

(1). App has been outsourced to make new update. Old Version of app having push notification, If i transfer an app from one Apple ID(older version of app has been developed) to another Apple ID(new), do i need to create a separate certificate for push notification in new Apple ID or it is possible to use the existing one?

(2). i need to use the same bundle id, so that it will be like an update. Is this possible if the app has push notification

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Transferring an app uses push notification, from one developer account to another
 
 
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