Old Multisite Domains Still Serving Default Forum After Disabling Multisite

Looking at the missing images they appear to have a ‘nested’ url, here is one:

(https://forum.mamapedia.com/user_avatar/forum.mamapedia.com/jakeatgetit/24/5872_2.png)

And @pfaffman this was in fact the main site in the multisite setup.

CC: @Abdelrahman_MoHamed