Hello, in Project 2010 I often use the inactive task feature that allows me to model changes faster without destroying the project schedule.


But there is a problem: when I apply the "Resource Usage view" and create a group that groups by name and then by project, MS Project continues to calculate the inactive tasks as work effective tasks.
How could I fix it?

I see the same issue. The "Project" group is not showing the correct data. I'd say it is a bug and I'm afraid I don't know how to fix it. I'll play around for a bit to see if I can come up with a solution.
The resource usage view without grouping show the correct data - it is somehow the group header that causes the issue.