[whpalmer4]

Where do you envision the elapsed time being recorded? One could create an Applescript that when invoked recorded the start time in the notes field, and another which calculated the elapsed time and put it in the duration estimate field, or the notes field, and marked the task complete. Having watched the Harvest demo video and browsed the website a bit, I'm not quite sure I see what you have in mind for an OF/Harvest integration. Are you expecting something to enter your OF tasks in Harvest, or what?