No we don't use the favorites. We were receiving DIY for the longest time on the Joey, but not main for at least 4-6 months. After your question, I see it is gone now.
I didn't mention favorites specifically because there are also other guide settings. With the channel being DIY and now being gone, it would depend on what subscription you have but as that was recently on a free preview (I believe, could be wrong) it might be because one guide was set to all, one guide was set to all subscribed.