Coded UI tests is the same thing I'm talking about. You record a manual test and then can run it automatically. But you'll find that it doesn't work that great with certain features of Dynamics AX; that's why I mentioned that achieving full automation would require additional work. You would create a coded UI test from a recording and change the code.
I think that allowing testers to fast-forward some parts of manual tests is still very helpful even without full automation.