[keycloak-user] Users added since last restart MISSING/GONE after power went out

There may be a serious bug in Keycloak. I have a number of users that have been completely wiped from the Keycloak mongodb database after a power outage. Luckily I retain their information in a separate mongodb database with other information or they would be gone forever. When does Keycloak commit user data? The users that are missing are users that registered after the last system restart but before the system went down after a power outage.