@MattKing ..frustrating (and unprofessional) indeed
As mentioned above, I did contact both PSI and Kodak, the former said that the old data sheets are still valid, the latter told me to take a look at The Massive Devchart.
For clarity, both of your contacts above were not to Kodak - either Eastman Kodak or Kodak Alaris.
One was to Photo Systems, and the other was to Photo Systems' Kodak branded chemicals division - where the contact people are their distributors, Cinestill.
Kodak Alaris was the last Kodak direct related entity that had charge of the datasheets, and when they took them over, all they really did was change the name from Eastman Kodak to Kodak Alaris, and delete references to no longer available Kodak films. They weren't involved with the actual manufacture of the chemicals, although they were involved with the scrambling to replace disappearing manufacturing (Tetenal) resources, so they probably helped specify the replacement product specs.
That being said, I expect that Photo Systems has lots of communication with the main film manufacturers - they do make photo chemicals for a fair number of brands, like Eco Pro and Legacy and others.
They just leave it to others to provide user support.
