Tasks Assignments work a bit differently in PS 2007. There is a new field
called "Assignment Owner" which can be set on each task assignment in
Project Pro. Include it as a field in the Task Usage View.
There is also a field associated to each resource now called "Default
Assignment Owner". If you don't set this field to be the same as the
resource (by leaving it blank), then each new assignment you create as a PM
for that resource will by default set you the PM as the "Assignment Owner".
This is why you see the assignments and they don't.
For existing task assignments you will have to go to each project and copy
the resource name to the Assignment Owner field and re-publish.
To prevent this in the future for new tasks assignments, you need to make
sure all resources have the default assignment owner set to themselves.
This auto populates when you create a resource from PWA but not if you
create it via Project Professional. And for existing resources you have to
set it one at a time via PWA which is very painful.
Jonathan