Our situation:
We have 2 UA servers. We wanted to store the client settings in the DB. We altered the ism-configuration.properties file based on the documentation provided by MF. So the issues we have now encountered are:
Dashboard no longer loads and throws the error: Internal Error. Please contact Administrator.
The cache settings are completely wiped out and can no longer flush the cache.
Cluster mode can't be enabled.
Administrator assignments seem to have been corrupted or altered in some odd way.
User search function now fails.

Has anyone sucessfully changed from file system mode to database mode without seeing a wide array of errors?

Our environment
Idvault 4.7.2
UA version 4.7.2
eDir 9.1.2