when i was updating a task (and the current day i set to today which is august 15th) the task start date was august 2 and finish date was showing august 6th but that task is 50% complete. so the task that is not yet done can not finish in the past. so i selected the task and went to tools>tracking>update project and then selected update work as complete through, set 0-100 complete and marked selected tasks. but it did not bring the task to current date and then made it 100 % which i dont want. so i made it 50% again also tried making the remaining duration so that it will be 50% but the question is why it doesnt bring the task to current date? it still makes it finish in the past. shouldnt it automatically lengthen the actual duration because it knows the current date is august 15 now.

So was the task 50% complete back in early August or is it 50% complete this week?

If it was 50% complete in early August:

1. Set if 50% complete
2. Tools > Tracking Update Project > Reschedule uncompleted work to start after August 15th.

The task will split with the portion that was 50% complete staying back in early August and the remaining work and duration will be rescheduled to commence on August 15.

If no work was done back in early August, then do step 2 only to reschedule the entire task to begin on August 15th