Hi,
I'm running RTM on v 2013. That is 12.00.1368, and my experience is the same as Richard's. I brought up the Employee Pay Code Maintenance window, selected a pay code and then entered a note via the note button to the right of the Employee ID lookup button. Employee ID = ACKE0001, Pay Code = BONS. I did the same thing for Employee ID BARR0001 and Pay Code BONS. When I brought ACKE0001 up again, the note was the correct note. When i brought up BARR0001, the note was different, and correct.
Could you give is some more information on exactly what experience your folks are having? Maybe a screenshot?
Leslie