Ouch. Way back in the day I helped a small software company in LA that did Dental Practice billing port their system from a DEC RT-11 base to MS-DOS. What I found interesting was how much knowledge about how various insurers and other agencies worked was in the software but not part of the generally accepted knowledge base. Things like "you use this code for fillings if they are on kids, but this other code for fillings on adults, unless you expect them to become crowns in a couple of years, ..." That was the real crown jewel, not the database of codes and procedures.
Sounds like Tata was caught trying to appropriate that kind of information.