If you’ve upgraded your credit card, say to a Suncorp Bank Clear Options Platinum card, you can continue using your old card on Samsung Pay until you’ve activated your new one. Once you’ve done that, your new card will automatically update without you having to do anything, and you’ll receive a new Token.
If your card has expired, you’ll still be able to see it on the Samsung Pay app, but any transactions you try to make may be declined.