It is a shame they have given up on the species, it was probably the best enclosure ive seen for them too! It's 3 years since i was there so my memory may be playing tricks, but i think it's only place i've been to with indoor viewing for them. I didn't need it there though, unlike other places i saw one outside & active on my first visit to the enclosure mid afternoon.
They moved to a different enclosure about 2 years ago, in which they were a lot less visible unfortunately. Their old enclosure now holds giant anteaters, whilst their more recent enclosure was the old wolf enclosure when you'll have last visited.
A shame as the other enclosure was indeed very good for seeing them!