Ran across an ssue today where I could not find any of the upcoming NASCAR races scheduled to be recorded. Upon closer review, I noticed that FS1 was not displaying in my guide. I went to setting page and edited the channel list and sure enough, there was an error when channels tried to connect to FS1. I rescanned the FS1 channel and it came back as authorized. After updating the guide, things were back to what I expected. If I hadn't noticed the error, I would have probably missed recording the upcoming races.
As a feature request, I think it would be nice for channels to notify channel additions/deletions in some sort of way by call sign. I know that the number of channels I receive changes occasionally, it would be nice for Channels DVR to tell me what and when new channels arrive or old channels disappear.