BartH --
Fixed Cost is any extra cost incurred on a task that is not based on the
resource's work multiplied by the resource's Standard rate. For example,
you assign a resource to a task called Acquire Building Permit. You assign
the resource to work full-time for 4 hours and the resource's Standard rate
is $50/hour. Microsoft Project calculates the cost of this task as $200,
which is 4 hours x $50/hour. Beyond the $200 cost, you also have the cost
of the building permit. Let's say the cost is $1,000. You would enter the
$1,000 in the Fixed Cost column for this task, so now the Cost value for the
task is $1,200.
The behavior you are seeing in the Fixed Cost column, which is that the
Fixed Cost values do not roll up to summary tasks, is NOT a bug. It is by
design. Microsoft knows that Fixed Costs may not only occur on regular
tasks. Fixed Cost can be assessed against a regular task, a summary task
representing a Phase or Deliverable section of the project, or even on the
Project Summary Task (Row 0). When you assign a Fixed Cost on the Project
Summary Task, you are assessing the Fixed Cost on the project as a whole.
So, because you need to be able to assess a Fixed Cost at any level of the
project, Microsoft engineered this feature so that the Fixed Cost values do
not roll up.