I have a few keycodes that are sealed and unused in original packaging. I Purchased online a coulpe of months back for a BCM400 4.0 I am looking to put into service. My question is will they expire if I don't use them right away? NTKC0001, 0082, 0045, 0046. And will they work on both BCM 400 and/or BCM 50 as well? Thanking everyone in advance for any helpful info.