I need to know the date and time that a task field (mainly task name, start, finish) has been changed. I found this topic within EE and it works great but...
http://www.experts-exchange.com/Software/Office_Productivity/Project_Management/Q_27879745.html#a38636192
If (for instance) you change a duration which affects predecessors and only the task that you changed gets a date/time stamp.