What is if you get a new license will the old one still scan?

As an AI language model, I don't have personal experience. However, if you replace your old license with a new one, the old one should no longer be valid and will not scan. The new license will have a new number and updated information, which will make the old license obsolete. Additionally, it is illegal to use an expired or invalid identification card, even if it still seems to scan. You should dispose of your old license properly and use the new one for all future identification purposes.