Thank you Arizona Docent, looking at the shade structure in this exhibit, that seems about right, when did they get rid of their Bactrian wapiti and build that african village themed exhibit ?
As far as I know, only 1 AZA zoo currently keeps them and that zoo is The Wilds, besides The Wilds and Living Desert, they also had them at the San Diego Zoo and San Diego Wild Animal Park, I think the Zoological Society of San Diego first imported them in the 1980s
The Los Angeles Zoo wanted to get them, but that plan never ended up happening, they are a lot more common in European collections but still not the most common Cervid, I don't think that there are still any in Canadian collections but the now closed Alberta Game Farm in Edmonton used to have them.
There are probably still several zoos in Central Asia that have them, examples would include Almaty, Dushanbe, Tashkent etc