Vertica deletes records from tuple_mover_operations table?

I can see the running record while it is running:

=> select operation_start_timestamp, operation_name, table_name,ros_count, total_ros_used_bytes,plan_type,is_executing from tuple_mover_operations where operation_start_timestamp >'2013-08-26 11:00:00' ;
   operation_start_timestamp   |   operation_name   |       table_name        | ros_count | total_ros_used_bytes |     plan_type      | is_executing
-------------------------------+--------------------+-------------------------+-----------+----------------------+--------------------+--------------
 2013-08-26 11:45:17.221133-04 | Moveout            | test_load               |       805 |            790757376 | Moveout            | t

But after it finishes running, I can't see it anymore. Why?