I’ve noticed that some Project users do not understand how % Complete and Start date are connected, and because of that they think that MS PROJECT 2013 has a bug.
Let me give you an example. First I will create a simple Project:
Now I will mark Task 2 as 50% completed, and I’ll get:
Now suppose that Task 1 has 5 days duration. If I enter 5 days in duration field I will get:
As you can see, Start date in Task 2 is not changed. And this is not a Bug. Why? Because Task 2 has started with work.What can you do? You can say that Task 2 is 0% completed, and you will get:
Now you can mark Task 2 as 50% completed again.
But I will ask you a question as a Project Manager, and not as a Microsoft Project User. If you establish Finish-To-Start link between Tasks, that means that Predecessor must be finished, before Successor can Start. So, why will you mark Successor as Partial finished? If you can Start Successor before Predecessor ends, you can put a Lead time on Successor, or you can establish another type of Dependencies like Start-To-Start.