We where very badly with the cisco bug "CSCuo93378" and ACS 18.104.22.168. A primary/secondary cluster has all policies zapped.
What saved used was acs restoral and we ended up craft a acs-support bundle case.
Make sure you setup a remote repository and schedule daily backups.
NSE ( network security expert) and Route/Switching Engineer
kfelix -----a----t---- socpuppets ---dot---com
=( @ @ )=