Is the problem a question of re-indexing ?
Perhaps the application group had to be expanded, and they wanted data re-loaded ?
If reports are available, re-load to the new group. If not, extract from first app group (arsdoc "get"), and re-load to the other.
Extract the load-ids, and you can build a script to do the whole thing. For migration, I have a script generator.
I currently have a script moving 13 years of monthly reports from z/OS to AIX.
The report iterations are large. The script has been running snce October 2nd. I expect to complete early next week.
I have coded for trigger files to allow the script to pause when necessary between iterations, then continue.