The IDMS MQ adapter support in r19.0 does not appear to be backing out MQ objects when a task encounters an application abend.
Release : 19.0 Component : CA IDMS/DB
If an IDMS application program using the IDMS MQ adapter encounters an application problem and issues a database ROLLBACK but does not abend the task, then the MQ updates will still be committed. IDMS database recovery and MQ recovery act independent of each other.
If an IDMS application program issues a ROLLBACK for whatever reason, then if it wants the MQ activity to be rolled back as well, it must either allow the task to abend or issue an MQBACK call.