Using CX-5 Navigation Card in CX-3

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Mazda CX-5 GS
So I currently have a CX-5 GT 2017 that came with a Navigation card. I upgraded to Android Auto and never use the Nav that came with the car anymore. My daughter is buying a CX-3 GS 2019 that doesn't have Navigation and I wanted to give her my Navigation card to use in it. The dealer told me that shortly after my CX-5 went on the road the SD Card is locked to the VIN number. Now I'm wondering if anyone knows how to 'unregister' the card to my CX-5 VIN and use it in my daughter's CX-3. Her CX-3 does have Android Auto but she is ofter in remote locations that doesn't have mobile data access.
 
The card can't be unregistered from one car to be used in another. But you can find them on eBay for about $40. Others on here have had luck with that. Another option, when using Android auto, you can download maps for a given area so that you don't need a data connection.
 
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