[rules-users] drools persistence contract

Hi all, When persisting a session, process instance or workitem, Drools persists some parts of the state as byte arrays. I am trying to upgrade from 5.1 to 5.3 and I have some existing sessions/processes persisted in the database. I am wondering if it is safe to upgrade? Will the bytearrays created by 5.1 work fine with 5.3? Is there any document describing persistence compatibility between versions? I don’t see much in the “new and noteworthy” in relation to persistence. Thanks. Keep up the good work! Best regards, Michal