My rental contract is up on my 9242 and I'm going to be putting my 5900 and 3200 back into service. I've never advised BTV about not using them, are there any issues I should expect?
If Bell still thinks you are using them then you should have the latest cards and you should be good to go. Any problems, just call them and they should be able to fix it pretty quickly.
You will have to update the software if they have not been connected to the signals and they will require "syncronizing" which can be done online or via a CSR, to bring back the programming.