I need to be able to export Trac tickets from a report or custom query to Excel, including the ticket description. The catch is that the description must be formatted as defined by the wiki syntax rather than displaying the raw text.
you can just go to "View Tickets" and chose "Custom Query" there you select all the columns you want to see. There will not be a "Description" column, cause it could be wiki formatted, therefore it is available only as a "row" option. But you can still edit the query manually, and add a: &col=description in it, so you will have the description "unformatted" as a table column.
Than chose download as Comma Delimited Text, and open it in Excel ;-)
HTH