"The internal encryption module is in an inconsistent state"

Hi all,

I'm experiencing the following issue when restarting JBoss, after that the Primary DS' user has been changed. It's not a migration nor a fresh install, only a change in the configuration's parameters of the DB credentials (which is Oracle 12c).

2017-06-07 17:56:23,816 [ServerService Thread Pool -- 67] FATAL com.appiancorp.common.crypto.KeyStoreConfig - The internal encryption module is in an inconsistent state. The keystore password is not present in the Appian data source. If migrating or restoring from backup, ensure that the Appian data source contains all of the tables and data. (APNX-1-4210-004)

I've already looked at https://community.appian.com/support/w/kb/273/kb-1048-the-internal-encryption-module-is-in-an-inconsistent-state-error-returned-during-application-server-startup, https://forum.appian.com/suite/tempo/news/entry/e-169222 and tried https://forum.appian.com/suite/tempo/news/entry/f-112660, but without any success.

What should I try more, without losing data?

Many thanks!