Whether it fits or not is not the issue. You won't be able to unlock the maps and this applies just moving a card to one Rider to another. Tomtom give their maps a serial number and the satnav has a serial number. When you move a map to another satnav it will not work until you go to tomtom website for an unlock code - which of course it won't give you.
I had this problem with additional maps I bought from Tomtom. All was OK until they replaced the unit under warranty and I could not load the maps onto my new unit until I had phoned Tomtom and they updated their database to link the maps to the serial number of the new Rider.
There is some (illegal) software on the web that allows you to generate an unlock code. Sometimes it works, sometimes it doesn't (or so I am told !!)