The first part sounds like a basic ERP implementation. Only instead of leaning on your in-house domain experts who have years of experience/relevant knowledge/know the relevant caveats, you pay consulting rates to train up new domain experts who don't understand/know the caveats and who will charge you consulting rates to gain access to the results of the training you overpaid for.

'But they cleaned the data up'. That data was also cleaned up during all the last major system updates. And during the implementation of those systems. And the implementation of the systems before that.

I mean they do advertise themselves as an ERP system so that part tracks.