How to restore Gracenote EPG

New user here, so this question might be trivial. I changed guide source for one of my sources and I can't get any guide data to load. I would like restore the original Channels guide (grace note?) but I see no way to do that.

In the Guide Data section within settings I only have options for Redownload or Change Provider. Change Provider only gives me choices for some other guides I have tried (unsuccessfully) base on a zip code search.

I imagine I'm overlooking something obvious. Thanks for any help.

try this

Thanks for the response. Though, that made no difference. After Deleting and Recreating, the alternate guide I had previously selected for the source in question is still selected. The behavior of that selection box is unchanged from what I described in my OP.

To close the loop on this. I tried a variety of guides to no avail. I decided to delete the source and re-load. That resolved the problem. Now, off to re-setup recordings...