Corrupted (?) DL

I have a DL in a PST file that I cannot copy, move or export.

It opens just fine and I can see all of the users and their SMTP email
addresses in the list, but when I try to copy or move the DL to another
Personal Folder I get an error that the object cannot be moved. When I go to
the other Personal Folder the DL name is in the Contacts, but as a single
contact, not as the list.

When I try to export the DL to a CSV file all I get is the column headers,
everything else is blank.

Any suggestions would be appreciated.

Best >> Joe