Starting with XCOM r12.0 you can migrate your existing XCOM r11.5 or r11.6 VSAM XCOMRRDS(RRDS) to the new version 12 format using the XCOMMIGR utility. This can allow any transfer request that are in a request queue to be brought forward to a new release of XCOM without having to reschedule them into a new XCOMRRDS queue. For more details, refer to the CA XCOM User guide for the description of the XCOMMIGR utility,