I had upgraded to 1.18 from 1.16 then 1.17, and in the process seem to have lost all my overridden Smart Class Parameters, and the overridden settings at the host level.
Foreman and Proxy versions:
1.18.3
Other relevant data:
I do have an older database backup laying around, where in the DB are the settings stored? Even if I could simply get what they were set to I could easily recreate everything.