Changing Planning Units in P3e

I don’t think P3 can change planning unit in a project.
Way round is copying the whole project to another one

Disregard the copying thing. That is appropriate in P3 but not in P3e.

P3e ALWAYS tracks projects in hours (whether you know it or not.) You set the display style under Administrative settings menu to how you want the units displayed. You can show hours, even decimal hours, or you can show days, weeks, etc.

You also have to set an administrative setting for how many work hours in a day (ie. 8.) When you enter a day figure, P3e multiplies this by the number of days that you entered and stores that number of work hours in the database. When you display the figure, it divides the stored number by the multiplier just described and displays that number of days.

Try this for amusement – in P3e, enter 8.3 days for an original duration and see what happens. It magically turns into “8”. Enter 8.6 and you get “9”.

Hi,
This is just because you are not sholwing decimal places in your durations (its a user preference). If you dont show them then it will round up or down. Showing them via user preferences will keep the 8.3 or 8.6 or whatever it is.