When planning a turnaround project you want to make sure you include all the tasks that will happen and even those that might happen. This is a great strategy in the planning phase because during the actual turnaround, you don't have time to add all of the “potential” activities that become necessary.
Now the dilemma becomes, how to cancel the tasks that your team doesn't need after all.
You could process the updates for cancelled activities using manual data entry, dealing with logic, manhours, and baselines, but if you handle a lot of these it becomes time consuming, tedious and frustrating. Lets face it, during a Turnaround that is just not a good idea. You might think that dissolving is good enough, but is it?