Fixed, another person had added plugins to the site at the same time :/
I do have a WP cache plugin, but I cleared the cache and disabled it. the problem persists.
I have had to redirect the example page. Including HTTP Headers from redirect-checker.org from before I set up my own redirect:
>>> https://www.honoryoga.com/washington/
> ——————————————–
> 301 Moved Permanently
> ——————————————–
Status: 301 Moved Permanently
Code: 301
Date: Thu, 12 Mar 2020 20:09:49 GMT
Server: Apache
Vary: Accept-Encoding,Cookie
Pragma: no-cache
Expires: Thu, 12 Mar 2020 21:09:50 GMT
Cache-Control: max-age=3600
X-Redirect-By: redirection
Set-Cookie: PHPSESSID=0343e33a1f65e06c1f180a2b39499850; path=/
Location: https://www.honoryoga.com/washington/
Connection: close
Content-Type: text/html; charset=UTF-8