I often create tasks and assign them to other individuals to work on,
and they then assign the task back to me when they are done. If I
create a task and give it a category, after I assign the task and they
assign it back, the categories disappear.

This never hapenned when I was on OL 2007 and Exchange Server 2003.
We just migrated to Exchange Server 2007, but we are still using OL
2007. Any thoughts on this problem?

Thanks in advance!