Besides, the documentation that comes with the cards tells you to switch to the channel to watch the video. Like you, I rarely visit the "all or all sub" lists. But since the ch is explicitly stated in the documents, it was easy enough.
Besides, the procedure is pretty straight forward. Unplug old card (if present) and plug in new card. Wait for new card to be processed. If you have a DVR just make sure you aren't recording at the time. Plus they say that authentication could take up to 20 minutes, so don't do it your favorite show is about to start in 5 minutes.