[stephenrussett]

Ok here is the situation.

Create an activity with a effort of 8h.
Assign it to someone with a work schedule of:Mon 9am - 3pm, and Thur 9am - 12pm.

Make sure your project hours per day is set 8h.

The durations of the activity should now be 6d 3h.

Now change your project hours of work per day to say 24h or 1h.

The duration in the WBS changing according to the Project hours per day. But the Gantt is unaffected. Start and end dates are also unaffected. BUT the Duration seems to be linked with the Project hours per day even when it should not be because of custom work schedules.