If working in Project Server 2007 I can't help you.
If you're using Project Server 2003 the answer is YES there are times you
may see discrepancies in the published project plan and the OLAP cube.
Shouldn't be but there are. Most of the time, in my experience, it is driven
by issues in the project plan that cause the inconsistences. Potential issues
are
- Assigning resources to summary tasks. The summary task data is not
aggregated to populate the cube
- Plan aggregates not calculated correctly. I've had cases where the totals
for summary tasks do not equal the aggregate of the sub-tasks
- Plan corruption of various types, sometimes difficult to find but you
might check the differences in values from the task and resource usage views.
Adding the Actual Work Protected (or any other) column on the left pane
should equal the Actual Work Protected on the grid. I've had cases where they
didn't match and the data on the grid was used to populate the OLAP cube. The
data on the left pane is what you'll also see in the Gantt chartview.
- And some things that I've never been able to understand or get a definite
answer from Microsoft on. One of the best I've experienced is having the AWP
value in the cube equal to the AW and not the AWP value in the plan.
I've found that each of these is generally fixable, but can involve some
imagination and chicken bones.