I turned off the Outlook 2007 Sp2 preview pane, then used the Field Chooser to add cc-Topicname to the default ClearContext by Date view. cc-Topicname appears as Topic in the columns.
Then I sorted the columns by Topic. The topic displayed in the Topic column often is different from the actual topic.
For example, I have a message that is actually assigned to Product\Area. In the topic column, it shows DLs\DlName. If I highlight the message, the CC toolbar Topic field shows Product\Area. If I open the message, it shows Product\Area. If I file the message, it goes to Product\Area. Only the Topic column is wrong. So a message I need to see under Product\Area is invisible when I'm sorting/grouping by Topic.
I have a screenshot I can send to support to show the issue.
I'd be very interested to know if others out there can see this same problem. I hope I described the repro steps well enough that people can try.