Is this in Project Server 2007? If so, it could be you are experiencing a
side effect of a bug I have seen, I describe it below:
Open Project Pro with Load Summary Resource Assignments checked.
Open a project schedule and using Resource Usage view, find a resource that
has work assigned to Other Projects and commitments.
Add the actual work and remaining work columns to the view.
THE REMAINING WORK IS NOT BEING CALCULATED CORRECTLY, IT IS SET TO WORK!
And because you are showing inactive resources with remaining work always
equaling work, you will always get this message about inactive resources
having remaining work even if they don't!
Microsoft has confirmed this as a bug:
"This issue has already been identified as a bug; product team has reviewed
this bug. Unfortunately the product team can only address this bug in the
next release of Microsoft Project, which is Project 14. At this point in the
P12 (Project 2007) support cycle, it is not feasible to fix this bug."
The only work around I can think of is to set connection state to manual and
turn off the option to "Load Summary Resource Assignments"
Hope that helps,
Jonathan Sofer