I did not have Grand Canyon listed among the TACs on my iFly, so i went to the AP Updates page and it is listed there if you select 356 days - it expires in 2020. So I downloaded it. The Marbel Canyon Inset in the upper right corner is marked in red NOT GEO-REFERENCED., but I assume that applies only to that inset.
Now then, the Grand Canyon TAC still does not show up on my "Chart Expirations" list, nor do Colorado Springs, Orlando, and Fairbanks, even though I just downloaded them.. All these TAFs show up on the moving map, but not in the Chart Expirations list.